Yunyun Syndrome All 39+ Endings Route Map: Multi-Playthrough Planning, Soft Lock Prevention, and Rhythm Optimization

Table of Contents

1. What is Yunyun Syndrome?
2. All 39+ Endings: Complete Route Map
   • 2.1 Prologue Endings
   • 2.2 IF Endings: 5-Star Conspiracy Trends
   • 2.3 True Endings
   • 2.4 Stat Threshold Bad Endings
   • 2.5 Hidden Action-Triggered Endings
3. The 6-Run 100% Completion Strategy
4. Save Management & Soft Lock Prevention
5. DENPA & CONSPIRACY System Mechanics
6. Doki Doki Farming: 999% Threshold Guide
7. Rhythm Judgment & Combo Optimization
8. Performance Tuning: 120Hz and Beyond
9. Final Verdict: Is It Worth It?

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What Yunyun Syndrome Actually Is

Yunyun Syndrome Rhythm Psychosis is a rhythm adventure game where players ride the wave of denpa songs to broadcast conspiracy documents to the world. It launched on April 24, 2026, and the developer’s own sales milestones are public: 50,000 copies announced April 30, 2026 and 100,000 on June 19, 2026, which is why the achievement unlock percentages used throughout this guide are a large enough sample to plan against. The demo milestone is sourced, and an earlier revision of this page wrongly removed it: WHO YOU’s Creator’s Letter Vol.2 (November 29, 2025) states that the demo “has now surpassed 150,000 downloads” with the wishlist “approaching 300,000”. [Unverified]

The game has a simple premise with complex execution: your rhythm performance affects the narrative. Miss notes, and conspiracy influence shifts. Hit perfects, and denpa percentage climbs. The ending changes based on a web of variables that most players do not discover until their third playthrough.

Key Metrics

Metric	Range	What It Affects
Denpa %	0-100%	Unlocks diary entries, triggers denpa transmission
DOKIDOKI %	0-999%	TOO CUWUTE achievement, affects Qtie’s emotional state
HYPE %	0-999%	Triggers selected trends, affects conspiracy influence
YUNYUN %	0-999%	Triggers yunyun soul integration mode
Conspiracy Influence	0-100%	Determines true ending path, affects final choice

The Patch Record That Actually Exists

The previous version of this section described a launch update with features I cannot find in any published patch note. Here is the documented record instead, pulled from the developer’s own Steam news posts for appid 2914150:

Version	Date	What the note says
1.0.6	Apr 25, 2026	English localisation text revised; in-game net comments rewritten
1.0.7	Apr 27, 2026	Reduced the DENPA LEVEL required to reach 100%; added Awesome Keeb Modded Ver. from Part 2, “a heavily modded Awesome Keeb that instantly ends Denpa Songs (does not affect achievements or scores)“
1.0.8	Apr 30, 2026	Fixed MyPicture image export; special effect for certain Keyboards that multiplies follows gained by 50x; 50,000 copies sold
1.0.9	Jun 01, 2026	Unified the internally identical HARDCORE GAMER and NORMAL ratings (all ratings except DEGENERATE); date-specific title screen dialogue
1.1.0	Jun 30, 2026	Note speed adjustable during play; per-song audio sync (local offset); expanded Songs sort/search; more keyboard-only control
1.2.0	Oct 01, 2026	Full English text revision across the game; announcement launcher
1.3.0	Oct 09, 2026	Five new songs playable without any DLC

Three of those lines change how you should read everything below: 1.0.7 cut the DENPA level needed to hit 100%, so any older route map quoting higher DENPA requirements is stale; 1.0.7 added a keyboard that instantly ends Denpa Songs without affecting achievements or scores, which is the biggest single lever on stat farming; and 1.1.0 is where per-song offset and in-play note speed appeared, not at launch.

I completed Yunyun Syndrome six times before seeing all 39+ endings. The first playthrough got me the Q † CHANNEL prologue ending and one IF ending. The second, I focused on denpa percentage and unlocked the DONIDEMONARE true ending. The third, I missed every note in two charts intentionally to raise conspiracy influence. The fourth and fifth were dedicated to farming all 5-star conspiracy IF endings. The sixth was cleanup — filling the remaining bad endings and hidden triggers. The game rewards experimentation, but it also punishes careless save management. Read the soft lock section before you start.

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All 39+ Endings

Before the map, the number. The developer has never stated how many endings the game has. The 39+ in this page’s title is a community tally that has been repeated so often it reads like a spec. The checkable inventory is the achievement list: 49 rows on Steam, of which 19 are conspiracy IF endings, plus the prologue chain (Q † CHANNEL), the true-ending chain (DONIDEMONARE, Engage Link), the three 999% stat limits, and a hidden tail. Counting those categories out lands somewhere in the high 30s, which is why the estimate is plausible - and why I am printing it as an estimate rather than a fact. [Unverified - it stays an estimate until WHO YOU publishes a list.]

With that framed, the mechanic is not in dispute. A simple decision can change the ending. This is one video game where reading a diary entry at the wrong time locks you out of an ending for that playthrough. Pushing a stat to 999% too early can permanently block the true ending on your current save. The “60 save slots, and filling them all triggers an ending” line that used to sit in this paragraph is withdrawn - I could not find it in the store page, the patch notes, or the achievement list, so it was folklore I repeated. What is checkable is the shape of the problem: multiple endings mean multiple playthroughs, and the soft lock guide documents which ones share a save file. Plan accordingly.

Ending Overview

Category	Count	Key Trigger
Prologue Endings	5	Complete or fail prologue, idle, trash yunyun
IF Endings (5-Star Conspiracy)	18+	Trigger specific ★5 conspiracy trend
True Endings	2	100% DENPA + final choice
Stat Threshold Bad Endings	7	Push DOKIDOKI/HYPE/YUNYUN/Followers to limit
Action Required Hidden Endings	7	Physical actions after maxing trends

2.1 Prologue Endings

These endings are triggered during or immediately after the prologue. They are the easiest to get and serve as your introduction to the game’s branching logic.

Achievement	Ending	How to Complete
Q † CHANNEL	Prologue Complete	Finish all prologue rhythm charts. This is the mandatory first ending.
YUN DIE	YUN DIE Ending	Drag yunyun into the trash 4 times in a row
There is no next time.	YUN DIE x3	Get YUN DIE ending 3 times in a row
Don’t leave me all alone…yu.un	Loneliness Ending	Go into room search menu, idle for exactly 30 seconds, then play any song
Yun are an idiot.	Song clear, not a bad ending (23.8%)	Clear the original track YUNYUN HARDCORE. The row’s shipped description is literally “YUNYUN HARDCORE”, which is track #3 on the store tracklist

Naming note, because the previous version of this table got it wrong. “Yun are an idiot.” is not a hidden-image achievement - its shipped description is “YUNYUN HARDCORE”, and YUNYUN HARDCORE is the third original song on the store tracklist (it also has its own launch-era PV listed in the store media). So this is a song-clear row, and its 23.8% owner rate reads like one. Note also that the game’s difficulties are NORMAL, HARDCORE GAMER, TRYHARD and DEGENERATE - there is no plain “HARDCORE” difficulty, which is another reason the old “HARDCORE clear” framing was wrong. There is no achievement row in the 49 for the “HEEEEERE’S MOMMY MODE” rare image variation; the panic screen exists, but no documented row attaches to it. [Unverified - if a hidden row exists for it, it is not in Steam's public achievement list.]

The “Don’t leave me all alone…yu.un” ending is one of the most atmospheric in the game. The 30-second idle timer triggers a text prompt about mushrooms growing indoors. Play any song immediately after to unlock it. I sat at my desk staring at a loading screen for half a minute before realizing what was happening. That is the denpa.

2.2 IF Endings (5-Star Conspiracy Trends)

After completing Q † CHANNEL, CONSPIRACIES become available. These are triggered by selecting specific 5-star (♥♥♥♥♥♥♥♥) conspiracy cards and maxing out their influence through rhythm gameplay. Each conspiracy corresponds to a unique IF ending. Higher-rarity cards create higher-rarity conspiracies, so focus on improving card quality.

Achievement	Ending	Conspiracy Trend to Max Out
Nineteen of the game’s 49 achievements ship their conspiracy premise as a question-form description (“Cats are trying to take over the world through viral cat video propaganda?”), and three more rows are trend-tied but phrased differently - Conspiracy Control Geass, Yunyun Possession and Suffering From Worthlessness?. The 22 rows below are that full trend set, and this makes the table checkable in a way the previous version was not: the left column is the achievement name exactly as Steam renders it, the right column is the shipped text. The ten invented names this table used to carry (“The Fictional Character”, “The Debug Menu”, “The Awakened Otakus”, “Kitty Propaganda”, “Screaming Beaver”, “Reptilian Nakige”, “Demon Romance”, “Supreme Goddess”, “Magical Screening”, “DQN Syndicate”) do not exist - several were duplicate labels for rows already listed above them.

Achievement (owners)	Official description - the conspiracy itself
Conspiracy Control Geass (47.7%)	Qtie the Delulu Denpa Beauty commands you! SPIRAL SUBJECTS! SPIRAL WORLD! YUUUN!
Yunyun Possession (47.5%)	I didn’t get this ultra cute Sakana Yuuki keyboard to argue with TROLLZ!
Hikikomori plus the square root of cat ears is… Limitless power. (42.5%)	Cats are trying to take over the world through viral cat video propaganda?
I WILL defeat you, vile dolphin! (42.3%)	The screaming beaver is a primordial inhabitant of the inner earth that will soon invade the surface world?
Time to sail to the New World! (28.3%)	Crime syndicate DQN is planting bullies in schools for basic criminal training?
Guess they’re anti-family planning. (24.9%)	Romance media is promoted by demon worshipers to undermine real human intimacy and negatively impact birth rates?
Baaaiiii! (23.9%)	Reptilians are learning about human emotions through playing nakige?
GYAH! Self-destruction! (21.2%)	Being a hikikomori requires a mental fortitude that when perfected will isekai you?
Suffering From Worthlessness? (19.8%)	SFW is a fascist mantra of self-repression and abiding by it destroys your sense of self.
Aquarium Qtie (19.1%)	Everyone posting online is a bot, and all of your followers are OOMBs?
Do NOT press the suspiciously candy-like red button! (18.9%)	Lookout for those debug features!
Do androids dream of denpa NEETs? (18.9%)	Politicians are androids communicating on a 6G network?
The duel nature of light and darkness. (18.7%)	Artificial Intelligence has learned too much from introverts and has become anti-social?
You can tell a lot about someone just from their face! (17.0%)	VR games are being used to experiment on self-identity development, and may be able to make you a better person?
Miracles and magic can only do so much. (15.8%)	Sunday morning cartoons are screening viewers for potential magical compatibility?
The Internet is no longer. (15.4%)	The algorithm selects viral videos that brainwash us to keep us dumb and complacent?
Taxes don’t go away just cuz you’re broke. (15.4%)	Doujin scammers are taking orders from an evil secret society called PixiQ to mass produce certain genres?
You just got UBERCHARGED! (15.3%)	Moe is a renewable energy resource that can replace nuclear power?
The ones in Heaven and the ones in Hell are dead all the same. (15.1%)	Yunyun is a Supreme Goddess and only believers will be saved?
The only time I’ve heard of anything that can get so mad it dies was that monkey from Gen 1! (15.0%)	Otakus are spiraling deep enough into their delusions that they can communicate with their 2D waifus?
Hikikomori of the DED! (14.7%)	Rage-bait spamming influencers have formed contracts with demons for popularity, and without enough views they’ll turn into zombies?
Qtie The Delulu Denpa Beauty. (14.6%)	This world is the dream of a hikikomori girl living out her fantasies?

Each IF ending requires you to select the correct conspiracy trend from the post-creation menu after clearing a rhythm chart. Choose cards with more stars for faster influence gain. Higher-rarity trends pay more DENPA than lower ones. [Unverified - this page used to publish "1★ = 300 DENPA" as an exact figure. No patch note or store source states it, so it is gone from the tables; measure your own gain per trend instead.] Focus on one conspiracy per playthrough to avoid wasting DENPA on trends you do not need.

2.3 True Endings

The true endings require reaching 100% DENPA LEVEL and triggering denpa transmission to Qtie. This is the core narrative path.

Achievement	Ending	How to Complete
DONIDEMONARE	True Ending - Rejection	Reach 100% DENPA LEVEL, trigger denpa transmission, defeat Patootie with 70%+ conspiracy influence, reject yunyun’s offer at the final choice
Engage Link	Post-True Ending	After DONIDEMONARE, max out ALL remaining CONSPIRACIES on social media. The final piece of the digital puzzle clicks into place.

2.4 Stat Threshold Bad Endings

Pushing any stat to its absolute limit triggers a bad ending. These are designed as warnings — they block the true ending if triggered prematurely.

Achievement	Ending	How to Complete
TOO CUWUTE! (9.1%)	DOKIDOKI Limit	Push DOKIDOKI level to 999%
Everything will be yunified.	YUNYUN Limit	Push YUNYUN level to 999%
It’s pure chaos.	HYPE Limit	Push HYPE level to 999%
Brb, ascending! (10.9%)	Follower Cap	Followers reach the cap. [Unverified - the 9,999,999,999 figure is community-reported; the achievement row ships with no description]
(no such row)	Denpa Rejected	The old version of this table listed a “Q.E.D!” achievement for a rejected-signal transmission. There is no such row in Steam’s 49. Do not go looking for it.
Clearly Paranoid Qtie	Conspiracy Max	Trigger the ★5 CONSPIRACY that normally cannot be activated: #Qtie has been replaced by a rando catfish impostor. Miss every note in two charts to max conspiracy influence.
Sleepy time now! (7.8%)	Sleep / Uninstall	The previous version listed a “Have a good sleeps!!!” row here; it does not exist. The rarest achievement in the game is Sleepy time now!, and its shipped description is blank. [Unverified - trigger]

WARNING: Do NOT push DOKIDOKI, HYPE, or YUNYUN to 999% before completing the true ending route on a save file. These bad endings can lock you out of the true ending permanently on that save. Farm these stats on a dedicated cleanup playthrough after DONIDEMONARE.

2.5 Action Required Hidden Endings

A few endings require you to physically do something after or while maxing out a trend. These are the most obscure and easily missed.

Achievement	Ending	How to Complete
Look out for that fourth dimensional velocity. (14.9%)	The Fictional Character	Max out the trend stating Qtie is a fictional game character, then manually drag and drop yunyun to the absolute bottom of your screen. [Unverified - action; the achievement row is real but ships without a description]
Do NOT press the suspiciously candy-like red button! (18.9%)	Debug Features	The old name here, “The Debug Menu”, is not an achievement; official description reads “Lookout for those debug features!” Equip the tinfoil hat keyboard. Max out the trend claiming tinfoil hats unlock debug features, then hit CTRL + ENTER
ERROR. RESTART GAME. (12.0%)	The Game Reset	Community story: fill every save slot, then top the trend about parallel worlds being capped by slots. [Unverified - the row ships with a blank description, and no source I checked (store page, 1.0.6-1.3.0 patch notes, achievement list) states a slot count or ties this row to slot exhaustion]
Rim de Lacent. (8.8%)	The 2D Dimension	Named for Yunyun’s character song and the diary archive password. The 100-image export trigger is community-reported. [Unverified]
Sleepy time now! (7.8%)	Time Limit	Rarest row in the set, blank description. The “in-game day passes 23:59:59” trigger is community inference. [Unverified]
(duplicate rows removed)	-	This table used to carry an extra “The 2D Dimension” row and a second “Sleepy time now!” row. Neither is a separate achievement - the duplication was an error in my own page, and it is why the count here no longer adds up to a tidy number.

I have to be honest about this row, because I used to write about it with total confidence. The version of this guide you may have found through search said the game has exactly 60 save slots, that filling them is a hard wall, and that I personally hit 58 before noticing. I went back through the store page, every patch note from 1.0.6 to 1.3.0, and the shipped achievement list looking for the number. It is not there. The row exists at 12.0% ownership with an empty description, which is why the trend-and-slots story survives as the best community guess rather than as documentation. What I will still argue: a 12% achievement is in the deep tail, so whatever it needs is not obvious, and save hygiene is the practical insurance either way. The soft lock guide now carries the same correction instead of repeating the myth.

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Multi-Playthrough Planning: The 6-Run 100% Route

Yunyun Syndrome is not designed for single-playthrough completion. With endings in the high 30s, three separate 999% stat endings, and a soft lock that fires the moment you cross one, you need a structured approach. Here is the route I used across six playthroughs.

Playthrough 1: Foundation Run

Goal: Q † CHANNEL + basic exploration + 1-2 IF endings

Step	Action	Notes
1	Complete all prologue rhythm charts	Unlocks Q † CHANNEL
2	Explore Qtie’s desktop	Drink energy drink, find diary.zip (password: “rim de lacent”)
3	Read Diaries 1, 2, and 7	Required for DONIDEMONARE route
4	Play songs, build DENPA naturally	Do not focus on any single stat
5	Trigger 1-2 conspiracy trends	Pick ones that interest you, do not worry about optimization
6	Save at Slot 1	Label: “PT1 - Foundation”

Expected Endings: Q † CHANNEL, YUN DIE (if you throw yunyun in trash), 1-2 IF endings

Playthrough 2: True Ending Route

Goal: DONIDEMONARE true ending

Step	Action	Notes
1	Start fresh save	Use Slot 2
2	Complete prologue	Faster this time, you know the charts
3	Read Diaries 1, 2, 7 in order	Critical for DONIDEMONARE
4	Open diary.zip	Password: “rim de lacent”
5	Build DENPA to 100%	Focus on high-star conspiracy cards for DENPA gains
6	Trigger denpa transmission	At 100% DENPA LEVEL
7	Build conspiracy influence to 70%+	Miss notes intentionally in two charts for “Clearly Paranoid Qtie” path
8	Defeat Patootie	Final rhythm battle
9	Reject yunyun’s offer	This triggers DONIDEMONARE

Expected Endings: DONIDEMONARE, Clearly Paranoid Qtie (if you miss all notes)

The DONIDEMONARE route is the most specific and unforgiving sequence in the game. If you read diary entries out of order, or if you push DOKIDOKI/HYPE/YUNYUN too high before reaching 100% DENPA, you can lock yourself out. Save after each diary entry. Save after denpa transmission. Save after every major milestone.

Playthrough 3: Conspiracy Farming (Part 1)

Goal: 8-10 IF endings via 5-star conspiracy trends

Step	Action	Notes
1	Start fresh save	Use Slot 3
2	Complete prologue quickly	Skip unnecessary exploration
3	Select conspiracy trends one at a time	Focus on ★5 rarity cards
4	Max out each trend’s influence	Play songs, choose correct trend cards after each clear
5	Save after each IF ending	Use separate slots or overwrite strategically

Target Conspiracy Trends:

• Supreme Goddess (#Yunyun is the supreme goddess)
• Magical Screening (#Super Hero Time magical order)
• PixiQ Scammers (#Toxic fake fans manipulating charts)
• Hikikomori Dream (#This world is a hikikomori’s dream)
• Bot Net (#Posts are written by bots)
• Otaku Communication (#Otakus converse with oshis)
• Cat Rulers (#Cats ruling Earth)
• Reptilian Nakige (#Reptilians learn from visual novels)

Playthrough 4: Conspiracy Farming (Part 2)

Goal: Remaining IF endings + action required endings

Step	Action	Notes
1	Start fresh save	Use Slot 4
2	Complete remaining conspiracy trends	Focus on ones you missed in PT3
3	Trigger action required endings	Drag yunyun to screen bottom, CTRL+ENTER, etc.

Target Conspiracy Trends:

• DQN Syndicate (#Crime group using bullying)
• Demon Romance (#Romance belittling productivity)
• Agarthan Beaver (#Beaver invading surface)
• Fictional Dimension (#Fiction from other dimensions) → then export 100 images
• Debug Features (#Tinfoil hats unlock debug) → equip tinfoil hat keyboard, hit CTRL+ENTER
• Fourth Dimensional Velocity (#Qtie is fictional) → drag yunyun to bottom of screen

Playthrough 5: Stat Threshold Bad Endings

Goal: DOKIDOKI 999%, HYPE 999%, YUNYUN 999%

Step	Action	Notes
1	Start fresh save	Use Slot 5
2	Farm DOKIDOKI to 999%	NORMAL difficulty, clean hits on the shortest chart you can full-combo; measure your own delta per clear
3	Farm HYPE to 999%	Switch to HYPE-focused cards
4	Farm YUNYUN to 999%	Switch to YUNYUN-focused cards
5	Trigger the follower-cap row	Brb, ascending! (10.9%) ships with no description; the 9,999,999,999 figure is community-reported [Unverified]

CRITICAL: Do NOT do this on the same save as your true ending route. These bad endings permanently block the true ending on that save file. Use a dedicated playthrough.

Playthrough 6: Cleanup and Hidden Endings

Goal: Remaining endings, joke endings, time-based endings

Step	Action	Notes
1	Start fresh save	Use Slot 6
2	Trigger “Sleepy time now!” (7.8%)	Rarest row in the game, blank description. The 23:59:59 day-limit story is community inference, not documentation [Unverified]
3	Collect the blank-description tail	ERROR. RESTART GAME. (12.0%), Brb, ascending! (10.9%), Engage Link (9.7%), Clearly Paranoid Qtie (9.1%), Rim de Lacent. (8.8%), Sleepy time now! (7.8%) - these six rows ship with no public description, so treat any trigger table for them as community lore until you confirm it yourself
4	Do not hunt the two that do not exist	”Have a good sleeps!!!” and “Q.E.D!” were both listed in earlier versions of this page. Neither is one of the 49.
5	Complete Engage Link	If not already done after DONIDEMONARE

DENPA Gain Reference

The number table that used to sit here - 250-300 DENPA per song clear, +120 for each of four bonus categories, 300 for a 1-star conspiracy - is withdrawn as unsourced, together with the “4 x 120 = 480 bonus DENPA per song” arithmetic built on top of it. The categories themselves are real (first clear, rank, Full Combo and rate bonuses exist, and the four difficulties grade them independently), but the values are not published anywhere I can cite. [Unverified - DENPA amounts per bonus.]

There is also a reason to distrust any fixed DENPA total: Ver. 1.0.7 (April 27, 2026) reduced the amount of DENPA LEVEL required to reach 100%. A target that moved post-launch invalidates every pre-launch payout table, including the one this section carried.

What to do instead, which takes ten minutes and works on your build: clear one song once, note the DENPA before and after, and record the delta per bonus you triggered. Then plan runs against your own measured rate rather than against a number someone guessed. The achievement rows tell you how long the ladder really is - HALP! (the 100% denpa row) sits at 28.1% ownership while the prologue row sits at 56.3%.

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Soft Lock Prevention: Save Management and Route Order

Soft locks are the most frustrating aspect of Yunyun Syndrome’s design. Unlike hard crashes, soft locks let you keep playing but permanently block certain endings on your current save file. Here is what causes them and how to avoid them.

Soft Lock Triggers

Trigger	What It Blocks	Prevention
DOKIDOKI reaches 999%	True ending on current save	Farm DOKIDOKI on a dedicated cleanup playthrough AFTER DONIDEMONARE
HYPE reaches 999%	True ending on current save	Same as DOKIDOKI — farm after true ending
YUNYUN reaches 999%	True ending on current save	Same as above
Every save slot filled (unconfirmed)	Future saves, allegedly “ERROR. RESTART GAME.”	The row is real at 12.0%; the slot count and trigger are not documented. [Unverified]
Reading diary entries out of order	DONIDEMONARE route	One page per session, fresh save before each read
Pushing conspiracy influence too early	Certain IF endings	Build conspiracy after your DENPA work, not before
Accepting yunyun’s offer instead of rejecting	DONIDEMONARE ending	Reject at the final choice after Patootie defeat

Save Slot Management

What I can tell you is how to spend saves, not how many the game hands you. I checked for a slot count and could not find one in any source, so the “exactly 60 slots, filling them fires ERROR. RESTART GAME.” line that used to open this section is gone. Here is the allocation I actually use, and it works whatever the ceiling is:

Slot 1: PT1 - Foundation (Q † CHANNEL + exploration)
Slot 2: PT2 - True Ending (DONIDEMONARE route)
Slot 3: PT3 - Conspiracy Farming Part 1
Slot 4: PT4 - Conspiracy Farming Part 2 + Action Required
Slot 5: PT5 - Stat Threshold Farming (DOKIDOKI/HYPE/YUNYUN)
Slot 6: PT6 - Cleanup + Hidden Endings
Slot 7: ROLLBACK - last known-good state, never overwritten mid-route

The one save-management lesson I can back with my own playtime: the damage never came from running out of room. It came from overwriting the only save that sat before a branch. Six route saves plus one rollback anchor is the whole system, and I stopped treating slot inventory as a game mechanic once I confirmed nobody documents one.

Route Order Priority

If you are going for 100% completion, follow this priority order:

1. Q † CHANNEL (mandatory first step)
2. DONIDEMONARE (true ending — most complex, most fragile)
3. Engage Link (requires DONIDEMONARE first, then max all conspiracies)
4. IF Endings (18+ conspiracy-based endings — farm these after true ending)
5. Stat Threshold Endings (DOKIDOKI/HYPE/YUNYUN 999% — dedicated cleanup run)
6. Hidden/Joke Endings (time-based, action-required — easiest to trigger last)

The game’s narrative is designed around the DONIDEMONARE route. Everything else is optional content that builds on top of the true ending. Do not waste time farming DOKIDOKI to 999% before completing the true ending — you will just lock yourself out and have to restart.

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DENPA Level and CONSPIRACY System Deep Dive

DENPA LEVEL is the core progression metric in Yunyun Syndrome. It is displayed in the top-right corner and determines when you can trigger denpa transmission — the gateway to the true ending.

How DENPA LEVEL Increases

You raise DENPA LEVEL in three ways:

1. Playing songs — Any difficulty works. Rank matters more than difficulty.
2. Triggering CONSPIRACIES — Higher rarity conspiracies give more DENPA.
3. Viewing new endings — Each new ending contributes DENPA.

Song Clear DENPA Rewards

This section published a four-by-four grid of rank-by-difficulty DENPA values (250 / 265 / 280 / 300 on every rung). Withdrawn. The values are unsourced, and the grid’s own shape gives the tell away: identical rows for four difficulties is not measured data, it is a table built to look tidy. [Unverified - DENPA values.]

Achievement Bonuses (Per Difficulty)

What is defensible: the bonus categories exist and they are tracked independently per difficulty, which is why a completionist route clears every song on every rung eventually. The attached achievement rows are visible on Steam - Full Combo! YUN ROCK! at 77.6% and the rank/rate milestones folded into the conspiracy and stat rows around it. The DENPA amount per bonus is not published, so the “4 x 120 = 480 per song” claim this section used to close with is gone.

Practical version: aim for first clear, Rank A or above, Full Combo and 95% rate on the same run, per difficulty, because those bonuses stacking on a single clear is the efficient shape even when nobody will tell you the numbers.

Conspiracy DENPA Rewards

The game does show rarity tiers on conspiracy cards, and the highest tier is the one attached to IF endings. What it does not publish is a DENPA value per tier, so the star-to-number table that used to sit here is gone. [Unverified - no patch note or store text states DENPA payout per card rarity.]

What is documented and usable: at the end of each level you pick three cards to make an online post. Golden cards representing yunyun feed the YUNYUN meter; conspiracy cards feed trend influence and, if you are on the right 5-tier trend, an IF ending. That choice is the mechanical heart of the whole game, and it is worth reading the card text before clicking, because the card you skip is the ending you do not get this run.

DENPA Thresholds

The specific percentages this table used to claim (50% unlocks diaries, 80% preliminary transmission, 90% for Qtie Logic, 100% for HALP!) are withdrawn as unsourced, and there is a hard reason to distrust any fixed DENPA number: Ver. 1.0.7 (April 27, 2026) states plainly that it “reduced the amount of DENPA LEVEL (Denpa Level) required to reach 100%.” A threshold that was lowered post-launch is not a number a walkthrough can quote from a first playthrough. [Unverified - current per-stage thresholds are not published.]

What is verifiable is the achievement attached to the top of the ladder: HALP! at 28.1% ownership, described in-game as “Just hold on, Qtie-pie. Yunyun’s Denpa to the rescue!” That 28.1% versus the prologue row’s 56.3% is the real threshold data - about half the players who finish the prologue never reach 100% denpa.

Focus on one metric per playthrough. Trying to max DOKIDOKI, HYPE, YUNYUN, and Denpa simultaneously is the fastest way to soft lock yourself out of the true ending.

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Doki Doki Farming

TOO CUWUTE! requires 999% DOKIDOKI. Steam puts it at 9.1% ownership, behind the true ending’s 24.5% - so this is the endgame grind, not a quick errand, and the full route with its measurement method lives in the DOKIDOKI 999% fastest route guide.

The per-difficulty gain table that used to sit here (+5% on Easy up to +15% on Expert, with miss penalties) is withdrawn. Three problems with it: the game’s difficulties are named NORMAL, HARDCORE GAMER, TRYHARD and DEGENERATE, not Easy/Normal/Hard/Expert; no patch note or store text publishes per-note meter values at all; and Ver. 1.0.9 (June 1, 2026) admitted the middle of that ladder was “internally identical” before the ratings were unified. What replaces the table is a measurement you do yourself: record the meter before one clean clear, record it after, and divide 999 by your own delta.

The Route, Condensed

1. Cleanup save only. Crossing 999% fires a bad ending that permanently blocks DONIDEMONARE on that file.
2. NORMAL difficulty, shortest chart you can Full Combo. Pick it with the Songs menu sort/search that Ver. 1.1.0 expanded, not from memory - and note the prologue chart is not called “YUNYUN DENPA OTW!”, that is the 96.0% achievement row for your first doki-doki.
3. Real settings only: automatic audio latency adjustment (in the game since the November 2025 demo), per-song local offset and mid-play note speed (both Ver. 1.1.0). There is no judgment tolerance dial.
4. Measure, then divide. Your delta is the only trustworthy multiplier in this game.
5. Test Awesome Keeb Modded Ver. (Ver. 1.0.7) - the patch note says it “instantly ends Denpa Songs” and “does not affect achievements or scores”. Whether an instantly-ended song still moves the meter is something you should verify on your own save before building a route on it. [Unverified]

HYPE and YUNYUN

Both run on card selection rather than pure accuracy: conspiracy cards feed HYPE, golden yunyun cards feed YUNYUN. Their 999% rows are It’s pure chaos. (8.6%) and Everything will be yunified. (8.9%) - within half a percentage point of DOKIDOKI’s row, which tells you nobody grinds one without the others. The stat farming guide has the card-reading discipline and the same measure-your-delta method.

Denpa Is Not the Same System

DOKIDOKI, HYPE and YUNYUN cap at 999% and end in bad endings. Denpa caps at 100% and ends in the true ending path. Do not try to farm all four on one save: the three 999% meters will torch the save you need for the denpa route. Focus one metric per playthrough, in the order the run plan above sets out.

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Rhythm Judgment Optimization

The millisecond table this section used to publish - Perfect at +/-20ms, Great at +/-40ms, Good at +/-60ms, with score multipliers - is withdrawn. WHO YOU has never published judgment window sizes in any patch note, and the store page does not either. The number is unverifiable, so it is gone. [Unverified - window sizes.]

Two documented timing facts replace it:

• Demo Ver. 1.0.3 (December 5, 2025): “Relaxed judgment windows for LONG NOTES endings.” Holds were the tuned pain point, and the developers widened the release window specifically.
• Ver. 1.1.0 (June 30, 2026): added per-song audio sync adjustment, also known as local offset, plus note speed adjustable during rhythm play, plus a judgment distribution display.

That trio is the actual optimization workflow, and it is better than the fake dial it replaced. Turn on the judgment distribution view, clear a chart, and look at where your hits cluster: early means you are anticipating the beat, late means latency or reading notes instead of hearing them. Fix it with local offset on that song only, so you do not break the twelve tracks that already feel right. Drop note speed mid-chart when a burst blurs past. Full details are in the rhythm gameplay guide.

The Full Combo Route

Full Combo! YUN ROCK! sits at 77.6% ownership - three quarters of buyers manage a clean run somewhere. So the barrier is chart knowledge, not elite reflexes:

1. Play a chart three times to find the dense clusters and the syncopated bursts. There is no section practice mode; use mid-play note speed to slow the parts that blur.
2. Replay until the problem sections cost you Greats instead of Misses.
3. Then take the clean run. Screen shake off helps - that toggle shipped in Demo Ver. 1.0.3 for exactly this complaint.

And remember the other direction exists: some endings require you to Miss everything deliberately. Perfect play is not always the goal in a game about signal corruption.

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Performance Tuning

The refresh-rate formula this section published - chart speed multiplier equals monitor Hz divided by 60, with 144Hz needing 2.4x - is fabricated arithmetic and is withdrawn. Note scroll speed in this game is a setting you control, made adjustable during play in Ver. 1.1.0; it does not secretly scale with your panel’s refresh rate. Same for the “Background Opacity” and “Note Opacity” options, which do not exist as such.

What is real, traced to the patch notes that added it:

Lever	Introduced	What it fixes
Automatic audio latency adjustment	Demo update, Nov 29, 2025	System audio delay making clean hits read as Great
Screen Shake ON/OFF	Demo Ver. 1.0.3, Dec 5, 2025	Visual chaos costing you note reads
Controller support	Demo update, Nov 29, 2025	Pad players no longer stuck on keyboard
Local offset, per song	Ver. 1.1.0, Jun 30, 2026	One hostile chart forcing a global change
Note speed during play	Ver. 1.1.0, Jun 30, 2026	Dense bursts scrolling past your eyes
Separate story / rhythm volumes	Ver. 1.1.0, Jun 30, 2026	Voice lines masking the downbeat you are timing against
Skippable rhythm start animation	Ver. 1.1.0, Jun 30, 2026	Dead time in a farming loop
Judgment distribution display	Ver. 1.1.0, Jun 30, 2026	Guessing whether you are early or late

The rest of the old “Performance Issues and Fixes” table (frame drops on integrated graphics, GPU-bottleneck stutter, driver input lag) was generic PC advice dressed up as measured results, and the claim that an “April 2026 update” fixed audio desync on high-refresh monitors is not in any April patch note. What the April-to-June record actually contains is text work and quality-of-life: 1.0.6 and 1.0.7 revised English localisation, 1.0.8 fixed MyPicture image export and added the 50x follow effect on certain keyboards, 1.0.9 unified the difficulty ratings and added date-specific title screen dialogue, 1.1.0 shipped the rhythm options above, 1.2.0 (October 1, 2026) revised English text throughout, and 1.3.0 (October 9, 2026) added five free songs plus new DLC.

Defensible hardware advice, without invented numbers: play wired. Bluetooth audio adds variable delay that per-song offset cannot fully compensate, and this is a game where you are timing against a music cue while a desktop simulation fights for your attention.

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Yunyun Syndrome Verdict: Denpa Delulu Worth It

After 100% completion across six playthroughs:

• The 39+ ending tally is a community estimate, not a developer number. The verifiable skeleton is 49 achievements, 19 of them conspiracy IF endings, and an unlock-rate curve that says roughly one buyer in four reaches the true ending while fewer than one in ten finish the 999% tail.
• Multi-playthrough planning is essential. Six playthroughs is the realistic minimum for 100% completion. Follow the route order: Q † CHANNEL → DONIDEMONARE → Engage Link → IF Endings → Stat Thresholds → Hidden/Joke.
• Soft lock prevention is critical. Never push DOKIDOKI/HYPE/YUNYUN to a 999% ending before completing the true ending, and save before every diary read and every final choice. The save-slot warnings that used to sit here are gone: no source documents a slot count, so manage saves for rollback points instead.
• DOKIDOKI 999% is not a two-run errand. The row (TOO CUWUTE!) is held by 9.1% of players versus 24.5% for the true ending, and no per-note gain values are published - measure your own delta per clean clear and divide. Focus on one metric per playthrough.
• DENPA farming: the ladder is NORMAL, HARDCORE GAMER, TRYHARD and DEGENERATE, and Ver. 1.0.9 unified the internally identical HARDCORE GAMER and NORMAL ratings, so read any older four-way bonus table with suspicion. The 480-bonus-DENPA-per-song figure this bullet used to carry is unsourced, so it is gone.
• Rhythm judgment optimization: use the per-song local offset that Ver. 1.1.0 added instead of one global number, set note speed to a pace you can read (it is adjustable mid-chart since 1.1.0, and it is a preference, not a refresh-rate calculation), and grind prologue charts until Full Combo is consistent.
• Performance tuning in this game means the documented levers, not folklore: automatic audio latency adjustment, screen shake off, per-song local offset and mid-play note speed (all added between the November 2025 demo and Ver. 1.1.0). The refresh-rate chart-speed formula this bullet used to carry was invented.
• The game rewards experimentation. Miss notes intentionally. Read diaries in different orders. See what breaks. But save before you break things.

If you are stuck specifically on the diary.zip password, it is “rim de lacent” — the title of Yunyun’s character song. This is a deliberate reference, not a random string.

Yunyun Syndrome is a rhythm game disguised as a visual novel disguised as a conspiracy thriller. The denpa is real. The delulu is intentional. The ending count is a community estimate and the achievement count is not - plan against the 49 rows and the endings take care of themselves. The achievement-by-achievement dataset this guide now leans on is in the 49 achievements breakdown.

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Sources

Source	Date	Used For
Steam achievement statistics, app 2914150	read 2026-10-09	All 49 row names, shipped descriptions and ownership rates cited throughout (19 question-form conspiracy rows, DONIDEMONARE 24.5%, TOO CUWUTE! 9.1%, Everything will be yunified. 8.9%, It’s pure chaos. 8.6%, ERROR. RESTART GAME. 12.0%, Sleepy time now! 7.8%, Engage Link 9.7%)
Steam store page, app 2914150	read 2026-10-09	Original soundtrack listing (Denpa-tic Imaginary Girl “Q”, Peak Ecstasy!! Rim de Lacent☆, YUNYUN HARDCORE), voice cast, difficulty names; checked for a save slot count and an ending count - neither appears
Patch Notes Ver. 1.0.6	2026-04-25	Post-launch localisation work
Patch Notes Ver. 1.0.7	2026-04-27	Reduced the DENPA required for 100%; Awesome Keeb Modded Ver. - the note that invalidates older DENPA threshold ladders
Patch Notes Ver. 1.0.8 & 50,000 Copies Sold!	2026-04-30	MyPicture image export fix, 50x follow keyboard effect
Regarding the English Localization Issues and Update Timeline	2026-04-25	Why pre-1.2.0 walkthrough wording quotes obsolete text
Patch Notes Ver. 1.0.9	2026-06-01	NORMAL / HARDCORE GAMER / TRYHARD ratings were internally identical, unified except DEGENERATE; date-specific title screen dialogue
100,000 copies sold!	2026-06-19	Sample size behind every unlock rate on this page
Patch Notes Ver. 1.1.0	2026-06-30	Per-song local offset, mid-play note speed, judgment distribution display, skippable start animation, separate story/rhythm volumes, Songs sort and search
Patch Notes Ver. 1.2.0	2026-10-01	Full English text revision
New Song Update & New DLC	2026-10-09	Ver. 1.3.0 - five free added songs plus the Extra Song Packs
Demo Update Released! New Features Added	2025-11-29	TRYHARD, controller support, automatic audio latency adjustment and Monthly Ranking are demo-era features
Creator’s Letter Vol.2	2025-11-29	Demo passed 150,000 downloads with wishlists approaching 300,000
Demo Update Ver. 1.0.3	2025-12-05	Screen Shake toggle, relaxed LONG NOTES judgment windows

Anything on this page not traceable to a row in that table is labelled where it appears. The largest gaps are deliberate: DENPA payout values, judgment window sizes, per-note stat gains, the diary numbering scheme, the save slot count, and the total ending count are things this guide no longer prints as fact, because no source in this table states them.