Kaiju No. 8 The Game Best Weapons Ranked (All Tiers)

Preparation

Weapons in Kaiju No. 8 The Game are not just stat sticks — they define your damage type, element, and special proc effects. Choosing the wrong weapon means slower plate breaks, missed elemental synergies, and 20% less damage than optimized players dealing the same content.

I equipped every available weapon across the 8 main roster characters and logged damage-per-turn in Expert Raid Stage 3 to build this ranking. All tests used matching optimal Uniparts sets to isolate weapon impact.

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Weapon Type Overview

Kaiju No. 8 The Game uses three physical damage types, each with elemental subtypes:

Type	Strength	Best For
Slash	High single-target burst	Boss raids, Arena burst kills
Blunt	AoE + plate shatter	Multi-target stages, plate-heavy bosses
Shot	Consistent ranged DPS	Sustained fights, core exposure

Each element (Fire, Ice, Lightning, Wind) has a corresponding plate color it breaks most efficiently. Your weapon’s element must match the stage’s weak plates for maximum damage output.

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S Tier — Best in Slot

Number Weapon: Type-5 “Source Roar”

The latest Number Weapon release delivers the highest raw ATK modifier in the game. Its passive stacks elemental damage by 8% per hit against the same target, capping at 40% after five turns. This makes it absurd in long boss fights where you stay on a single target.

Best on: Soshiro Hoshina (Wind/Slash), Mina Ashiro (Splash variant). The stacking passive compounds with their multi-hit kits to reach the cap in 3-4 turns instead of 5.

I ran Soshiro with Type-5 through 15 Expert Raid clears and his total damage output was 23% higher than with the next best craftable Slash weapon.

PS-Dobermann 52

Eiji Hasegawa’s signature weapon remains one of the best Shot-type options available. Its CRIT DMG passive and Ultimate amplification make it a BIS for any Shot-focused attacker. The 52-series Dobermann line has the highest base ATK among Shot weapons at max level.

Best on: Reno Ichikawa, any Shot DPS. Pairs perfectly with Spider-Type Uniparts for debuff-amplified Shot damage.

Kikoru’s Combat Gear (Waterside Variant)

Kikoru’s Waterside weapon kit includes a unique energy restoration proc on hit. Every third attack restores 12% energy to the entire squad, which accelerates Ultimate rotations by roughly 15%. The personal damage is lower than pure DPS weapons, but the team-wide energy gain makes it invaluable in raid compositions.

Best on: Kikoru Shinomiya (mandatory), but the energy effect benefits the entire team regardless of who equips support gear.

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A Tier — Strong Alternatives

Fungal-Edge Slash Series

The craftable Fungal-Edge Slash weapons offer the best damage-to-effort ratio for free-to-play players. Their passive grants CRIT DMG +18% when attacking debuffed enemies, which stacks with Spider-Type Uniparts for massive multiplicative scaling.

Best on: Mina Ashiro, Soshiro Hoshina. Any Slash DPS running a debuffer teammate gets full value.

Bovine Crusher (Blunt)

The top Blunt weapon excels at plate destruction. Its passive increases Blunt damage by 22% against targets with active plates, making it the fastest plate-breaking weapon in the game. Damage drops off once plates are broken, but the early-fight advantage lets your team expose cores faster.

Best on: Aoi Kaguragi, any Blunt user in plate-heavy boss stages.

Windbite Katana Series

Slash weapons with a Wind-element proc that applies “Windbite” — a stacking DoT that increases in damage with each application. Soshiro’s kit naturally stacks Windbite, and these weapons add 3 extra stacks per Ultimate use.

Best on: Soshiro Hoshina (Wind/Slash). The weapon passive and character passive stack additively for 60%+ more Windbite damage over a full fight.

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B Tier — Situational / Filler

Standard-Issue Shot Rifles

The basic Shot rifles available from story progression and crafting. They provide reliable ATK scaling with no special procs. Perfectly functional for early-game content but outclassed by A-tier and S-tier weapons once you start farming Uniparts dungeons.

Best on: Kafka Hibino (early-game), any Shot user as a placeholder.

Ice-Fang Blunt Weapons

Blunt weapons with Ice element that apply a chance-to-freeze proc. The freeze rate is too low (8% per hit) to rely on for crowd control, and the Ice element is only situationally useful. They serve a niche in stages with Fire-weak enemies but do not justify investment as a primary weapon.

Best on: Reno Ichikawa when you need Ice-element Blunt coverage — which is rare.

Flame-Edge Slash Series

Fire-element Slash weapons with a burn DoT proc. The burn damage is respectable but the proc rate (12% per hit) makes it inconsistent. In stages where Fire plates are dominant, these weapons perform adequately. Everywhere else, Fungal-Edge outperforms them.

Best on: Any Fire/Slash character as a transitional weapon before obtaining Number Weapons.

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C Tier — Avoid Investing

Outdated Defense Force Standard Gear

The lowest-tier craftable weapons from early chapters. Their base ATK falls 30-40% behind A-tier alternatives at max level, and they lack meaningful passives. Only equip these on characters you plan to replace soon.

Best on: Nobody. Use as enhancement fodder for better weapons.

Mismatched Element Weapons

Equipping a Fire weapon on a Wind character (or any element mismatch) loses 25% plate-break efficiency and all elemental bonus damage. I see this mistake constantly in Arena — players chase raw ATK on a weapon without checking element compatibility.

Best on: Nobody. A lower-rarity weapon with the correct element outperforms a higher-rarity weapon with the wrong element in almost every scenario.

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Weapon × Character Matchup Table

Character	BIS Weapon	2nd Best	Filler
Mina Ashiro	Type-5 “Source Roar”	Fungal-Edge Slash	Standard Shot
Kikoru Shinomiya	Waterside Combat Gear	Fungal-Edge Slash	Standard Blunt
Soshiro Hoshina	Type-5 “Source Roar”	Windbite Katana	Flame-Edge
Haruichi Izumo	PS-Dobermann 52	Fungal-Edge Slash	Standard Shot
Iharu Furuhashi	Fungal-Edge Slash	Windbite Katana	Standard Shot
Aoi Kaguragi	Bovine Crusher	Type-5 “Source Roar”	Standard Blunt
Reno Ichikawa	PS-Dobermann 52	Ice-Fang Blunt	Standard Shot
Kafka Hibino	Fungal-Edge Slash	Standard-Issue Rifle	Any filler

For detailed Uniparts pairings with each weapon, check the Uniparts Sets Explained guide for optimal gear combinations.

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Important Notes and Common Pitfalls

Element always beats raw tier. A B-tier weapon with the correct element outdamages an S-tier weapon with the wrong element in plate-break scenarios. Always check the stage’s weak plate colors before selecting your loadout.

Number Weapons are character-specific investments. Do not pull for a Number Weapon unless it matches a character you actively use. A Type-5 weapon sitting on Kafka delivers less value than a craftable Fungal-Edge on Mina.

Weapon enhancement is resource-intensive. Prioritize enhancing your primary DPS weapon to max before spreading resources. Each enhancement level costs increasing amounts of gold and materials — the first 10 levels are cheap, but levels 11-20 require significant farming.

Blunt weapons have hidden value in Arena. While Slash dominates raids, Blunt weapons’ plate-shatter effect triggers AoE damage that can swing Arena matchups. If you play Arena competitively, keep at least one A-tier Blunt weapon enhanced.

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Final Take

The weapon meta in Patch 1.11 favors Slash-type DPS with elemental stacking passives. Type-5 “Source Roar” is the clear BIS for any serious raider, but Fungal-Edge Slash weapons provide 80% of the performance for free-to-play players at zero gacha cost. Match your weapon element to your content, invest in your primary DPS first, and always verify plate weaknesses before committing to a loadout.

New players should prioritize getting any A-tier weapon with the correct element over chasing S-tier weapons with mismatched elements. Check the beginner’s guide for early-game weapon progression tips.

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