Factions, Quests, Runner Shells & Abilities, Combat Basics, Loot Grinding & Pro-Level Survival—Everything before entering Tau Ceti IV.

This comprehensive guide covers all essential aspects of Marathon including faction unlocks, quest walkthroughs, Runner Shells with detailed abilities, combat strategies, loot optimization, and advanced survival tactics.

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Before we start, we have also written some related content that may be helpful to you:

Marathon Quick Start Guide Before Playing

Marathon All Quests Priority Contracts Guide And Map

Marathon Guide to Pinwheel Base Entry and FTL Array Scanning

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Table of Contents

1. Getting Started: Essential Beginner Tips
2. Runner Shells: Classes and Abilities
3. Faction Unlock Guide
4. Priority Contracts: Complete Quest List
5. TOX Clear Hazard Gas Removal
6. DCON Usage Guide
7. Data Reconstruction Quest
8. Protect/Destroy Quest
9. Schema Acquisition and Usage
10. Map Key Locations and Loot Spots
11. Combat and Survival Strategies
12. Vault Upgrades and Best Purchases

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Essential Beginner Tips

Survival Principles

Marathon is an extraction shooter where death means losing all carried gear. Success requires balancing risk versus reward.

Essential Loadout Formula:

• Bring one primary weapon
• Carry two stacks of ammunition
• Pack medical consumables
• Don’t get greedy—secure loot and extract

Audio Awareness

• Everything makes noise—footsteps, opening doors, using items
• Use headphones to detect enemy positions
• Listen for extraction beacon activations
• Audio cues reveal nearby threats before visual contact

Heat Management

Heat (stamina) depletes when sprinting, jumping, and using abilities.

• Crouch to cool Heat faster
• Monitor Heat levels during engagements
• Avoid overheating in combat situations
• Upgrade Heat capacity through CyberAcme faction

Solo Play Recommendations

• Play as Rook or Assassin for solo runs
• Rook provides reconnaissance advantages
• Assassin offers stealth capabilities
• Avoid direct confrontations; pick fights carefully

PvP Combat Awareness

• Time-to-kill (TTK) is fast—expect quick deaths
• UESC bots are deadly; treat them as serious threats
• Finish downed enemies to recharge shields
• Use stealth and choose engagements wisely

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Runner Shells: Classes and Abilities

Marathon features 7 distinct Runner Shells, each with unique Tactical and Prime abilities suited to different playstyles.

Destroyer

Role: Frontline Assault

• Tactical Ability: Deployable shield for cover
• Prime Ability: Damage boost and damage reduction
• Playstyle: Aggressive entry, tanking damage
• Best For: Team players who lead engagements

Vandal

Role: Mobility Specialist (S-Tier)

• Tactical Ability: Grappling hook for rapid movement
• Prime Ability: Enhanced speed and jump height
• Playstyle: Hit-and-run tactics, flanking
• Best For: Players who value positioning and escape options

Assassin

Role: Stealth Operative

• Tactical Ability: Temporary invisibility
• Prime Ability: Critical damage boost from behind
• Playstyle: Silent elimination, avoiding detection
• Best For: Solo players and stealth enthusiasts

Thief

Role: Loot Specialist

• Tactical Ability: Loot detection through walls
• Prime Ability: Faster looting and increased carrying capacity
• Playstyle: Resource gathering, economic advantage
• Best For: Players focused on maximizing extraction value

Recon

Role: Information Gatherer

• Tactical Ability: Enemy detection pulse
• Prime Ability: Enhanced vision and tracking
• Playstyle: Team support, callouts, intel
• Best For: Cooperative team play

Triage

Role: Combat Medic (S-Tier)

• Tactical Ability: Healing drone deployment
• Prime Ability: Area-of-effect team healing
• Playstyle: Support, keeping teammates alive
• Best For: Team players; ultimate insurance policy

Rook

Role: Beginner-Friendly / Balanced

• Tactical Ability: Enhanced shield regeneration
• Prime Ability: Damage resistance boost
• Playstyle: Versatile, forgiving for new players
• Best For: Learning the game, solo survival

Runner Shell Tier List

Tier	Shells	Reasoning
S	Triage, Vandal	Best team utility / mobility
A	Destroyer, Thief, Rook	Strong combat / loot / beginner friendly
B	Recon	Situational team value
C	Assassin	Difficult to master, niche use

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Faction Unlock Guide

Marathon features 6 factions. Only CyberAcme is unlocked at the start; the remaining 5 must be unlocked by completing liaison contracts.

Starting Faction

CyberAcme

• Status: Unlocked (available at game start)
• Starting Quest: Welcome To Tau Ceti
• Rewards: V75 Scar, Protector V1 Shield

Unlockable Factions

Faction	Unlock Condition	Starting Quest	Reward
NuCaloric	Complete CyberAcme liaison contract	Survival Directive	1500 Credits
Traxus	Complete NuCaloric liaison contract	Cutthroat Competition	V22 Volt Thrower
MIDA	Complete Traxus liaison contract	Order/Chaos	Random upgrade gear
Arachne	Complete MIDA liaison contract	Defeat Runner enemies	WSTR Combat Shotgun
Sekiguchi	Complete Arachne liaison contract	Damage absorption quest	Random core

Faction Upgrade Priority

CyberAcme Upgrades:

• Heat Sink: Reduces Heat accumulation (Priority #1)
• Expansion: Increases Vault space (Priority #2)

NuCaloric Upgrades:

• Reinforce: Reduces debuff duration
• Recovery: Enhanced health regeneration

Traxus Upgrades:

• Tracker: Extends enemy ping duration
• Superior Mods: Better mod loot quality

MIDA Upgrades:

• Flex Matrix: Boosts movement speed and jump height
• Bonus Equipment: Additional gadget spawns

Arachne Upgrades:

• Hard Strike: Increases melee damage
• Factory Reset: Enhanced healing capabilities

Sekiguchi Upgrades:

• TAC Amp: Increases Tactical ability frequency
• Prime AMP: Increases Prime ability frequency

Leveling and Rewards

• Earn Rep (reputation) by completing quests to level up faction ranks
• Leveling unlocks: Better gear, upgrade options, reward packages
• Each faction has a unique progression path
• Priority Contracts gate further faction introductions

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Priority Contracts: Complete Quest List

CyberAcme Quests

Quest	Objectives	Rewards
Welcome To Tau Ceti [1/2]	Defeat UESC (x3), Scan FTL array	V75 Scar, Shield
Welcome To Tau Ceti [2/2]	Sabotage comms antenna	Leg Implant, Smoke Grenade, BRRT SMG
Introducing: NuCaloric (Liaison)	Acquire ID, Download data	Shield, Biomass, 1000 Credits
Introducing: Traxus (Liaison)	Hack terminal, Acquire Manifest, Scan container	Bully SMG, Mods
Introducing: MIDA (Liaison)	Defeat UESC (x15), Smash glass (x20)	Grenades
Introducing: Arachne (Liaison)	Damage Runners (x60), Down Runner	WSTR Shotgun, Mods
Introducing: Sekiguchi (Liaison)	Complete specific objectives	Core, Materials

NuCaloric Quests

Quest	Objectives	Rewards
Survival Directive	Download survey/botany data	Shield, Materials, 1500 Credits
Data Reconstruction [1/3]	Scan Bioprinters, Download report	Intel, Med Pack, 1500 Credits
Data Reconstruction [2/3]	Download logs, Hack Repositories (x3)	Shield, Intel, 1500 Credits
Data Reconstruction [3/3]	Hack Repositories (x2), Download protocol, Exfil	Shield, Self-Revive

Traxus Quests

Quest	Objectives	Rewards
Cutthroat Competition	Loot Rod Salvage, Exfil	V22 Volt Thrower, 1500 Credits
Equitable Distribution [1/4]	Acquire Data Drive, Deliver to DCON	Bully SMG, 1500 Credits
Equitable Distribution [2/4]	Summon Drone, Exfil Supplies/Manifest	Repeater HPR, 1500 Credits
Equitable Distribution [3/4]	Scan drones (x3), Deliver Gunmetal (x7)	Magnum MC, 1500 Credits
Equitable Distribution [4/4]	Trace Commander, Acquire credentials	Hardline PR, Access, 1500 Credits

MIDA Quests

Quest	Objectives	Rewards
Order/Chaos	Trigger alarms, Acquire credentials, Download data	Enhanced Equipment, 1500 Credits
Protect/Destroy [1/5]	Destroy analyzer, Acquire Sample, Deliver	Overrun AR, Light Rounds

Arachne Quests

Quest	Objectives	Rewards
The Fleeting Grave	Defeat downed Runners with finisher (x10)	WSTR Shotgun, MIPS Rounds

Sekiguchi Quests

Quest	Objectives	Rewards
Baseline Calibration	Take fall damage (x40), Tick damage (x20), Overheat (x3)	Core, Materials, 1500 Credits

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TOX Clear Hazard Gas Removal

Preparation

• Required Item: Hazard Override Card
• Acquisition: Found randomly in loot containers

Core Walkthrough

1. Locate Gas Room

   • Find rooms filled with yellow toxic gas
   • These rooms contain high-value loot

2. Find the Red Laptop

   • Look for a red laptop outside the gas room
   • Usually located on building exterior or near room entrance

3. Use Hazard Override Card

   • Interact with the red laptop
   • Insert the Hazard Override Card
   • Gas will be temporarily vented (approximately 30 seconds)

4. Quick Loot

   • Enter the room quickly before gas refills
   • Loot all valuable items
   • Evacuate promptly

Important Notes

• Hazard Override Card can be extracted and reused in future runs
• Gas venting time is limited; act quickly
• Gas rooms typically contain rare gear and substantial resources
• Bring Mechanic’s Kits to counter toxin exposure

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DCON Usage Guide

DCON (Data Connection) is a terminal device with an antenna used to submit quest items.

Perimeter Map DCON Locations

Location	Description
North Relay	On shelter rooftop
Station	Inside main building
Overflow	Near area center
South Relay	At southern relay station

Dire Marsh Map DCON Locations

Location	Description
Complex	Inside building complex
Greenhouse	Greenhouse area
Quarantine	Quarantine zone

Usage Instructions

1. Approach the DCON terminal
2. Interact to open the interface
3. Drag quest items from inventory into the DCON
4. Items will be transmitted to space, completing the quest

Important Notes

• DCON only accepts quest items; cannot store personal loot
• Ensure all deliverable quest items are submitted before extraction
• Plan routes to pass DCON locations before extracting

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Data Reconstruction Quest

Part 1: Bioprinter Data

Map: Perimeter

Steps:

1. Scan 2 Sparkleaf samples
   • Location: South Relay
2. Scan 2 Fungal samples
   • Location: Overflow
3. Download report
   • Location: North Relay terminal

Rewards: Med Pack, Credits

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Part 2: Algae Pond Logs

Map: Dire Marsh

Steps:

1. Download logs
   • Location: Algae Ponds
2. Breach 3 depots
   • Location: AI Uplink catwalk

Rewards: Shield V1, Credits

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Part 3: Data Vault Protocol

Map: Perimeter (complete in single run)

Steps:

1. Breach 2 depots
   • Locations: North Relay and South Relay
2. Download protocol
   • Location: Hauler (transport vehicle)
3. Extract

Rewards: Shield, Self-Revive

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Protect/Destroy Quest

Part 3: Install UV Protocol and Tag Locations

Prerequisites:

• Must complete preceding quest parts

Steps:

1. Acquire UV Protocol

   • Navigate to Intersection area
   • Locate blue building in southwest
   • Shoot 4 electrical boxes to obtain UV Protocol

2. Tag 3 Locations

   • Go to Maintenance area
   • Tag Location 1: Northeast side of rooftop
   • Tag Location 2: Red pillar at north entrance
   • Tag Location 3: Mid-height of south entrance pillar

Important Notes:

• All tags must be completed in a single run
• Must be close to designated locations to tag
• Watch for claymores and turrets in the area

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Schema Acquisition and Usage

What is Schema

Schema is a weapon blueprint that allows you to obtain specific gear or weapons for free.

Acquisition Methods

1. Rewards Pass

   • Earned by leveling up the rewards pass

2. In-Run Acquisition

   • Weapon loot crates
   • Searchable containers

Usage Instructions

• Schema usage is automatic
• Find Schema and extract with it
• Upon successful extraction, weapon appears automatically in armory
• No manual activation required

Important Notes

• Must successfully extract with Schema to unlock the corresponding weapon
• If you die during the run, the Schema is lost
• Prioritize Schema extraction over other loot

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Map Key Locations and Loot Spots

Perimeter Map

Key Points of Interest:

• North Relay
• South Relay
• Station
• Hauler
• Overflow
• Intersection
• Maintenance

Best Loot Locations:

• NuCaloric Research areas
• Tox Clear rooms
• Locked upper floors of buildings
• World boss spawn (high-tier loot)

Extraction Strategy:

• Stick to buildings for cover
• Check map for active extraction beacons
• Avoid open areas during final minutes

Dire Marsh Map

Key Points of Interest:

• West Gate
• East Gate
• Quarantine
• Maintenance
• Greenhouse
• AI Uplink
• Complex
• Algae Ponds

Loot Route Tips:

• Higher-tier loot in Quarantine and Complex
• AI Uplink provides good vantage points
• Multiple DCON locations for quest completion

General Map Tips

• Use map icons to track salvage locations
• Monitor active extraction beacons
• Learn spawn points and common rotation routes
• High-tier loot typically in dangerous areas

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Combat and Survival Strategies

Weapon Tier List

S-Tier (Meta):

• WSTR Shotgun
• Repeater HPR
• Bully SMG
• Longshot Sniper
• BR33 Battle Rifle
• Outland Marksman

A-Tier (Reliable):

• M77 Assault Rifle
• V75 Scar AR
• V22 Volt Thrower

Weapon Mods

• Every weapon supports 3-4 Mod slots
• Mods boost stats: damage, accuracy, handling, magazine
• Higher rarity mods provide better bonuses
• Check weapon mods before discarding—one white mod can be better than none

Combat Tips

1. Don’t Underestimate the Knife

   • Silent kills
   • No ammunition required
   • Effective against UESC bots

2. Finish Downed Enemies

   • Recharges shields
   • Prevents revival
   • Secures kills

3. Use Different Weapons for Different Maps

   • Close quarters: Shotguns, SMGs
   • Open areas: Assault rifles, snipers

4. Enhanced Healing Items

   • Pack Enhanced Med Packs when possible
   • Faster healing can save your life

Environmental Hazards

• Toxin: Avoid gas clouds; use Mechanic’s Kits
• Claymores: Watch doorways and chokepoints
• Turrets: Disable or avoid; high damage output

Extraction Timing

• Hide away from active extraction beacons
• Other players camp extractions
• Extract early if you have valuable loot
• Know when to walk away from fights

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Vault Upgrades and Best Purchases

Vault Expansion

How to Upgrade:

1. Access Factions menu
2. Select CyberAcme
3. Click Upgrades tab
4. Purchase “Expansion”

Upgrade Tiers:

• First two levels: +8 rows each
• Subsequent levels: Diminishing returns
• Maximum level 5: Requires 10,000 credits and 50 diodes

Best Upgrade Priority

Early Game:

1. Heat Sink (CyberAcme) - Manage stamina better
2. Expansion (CyberAcme) - More storage space
3. Reinforce (NuCaloric) - Reduce debuff duration

Mid Game: 4. Tracker (Traxus) - Better enemy intel 5. Flex Matrix (MIDA) - Improved mobility 6. Hard Strike (Arachne) - Melee damage boost

Late Game: 7. TAC Amp / Prime AMP (Sekiguchi) - Ability frequency 8. Superior Mods (Traxus) - Better loot quality

Economic Tips

• Collect Datacards and Valuables for Credits
• Target specific resources like Unstable Lead
• Sell excess gear rather than discarding
• Focus on Priority Contracts for faction rewards

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Quick Reference Checklist

Before Each Run

• Equipped primary weapon with ammo
• Packed medical consumables
• Activated faction contracts
• Selected appropriate Runner Shell
• Checked map for extraction points

During Combat

• Use cover effectively
• Monitor Heat levels
• Finish downed enemies
• Communicate with team
• Know when to retreat

Before Extraction

• Submitted quest items to DCON
• Secured high-value loot
• Checked for nearby threats
• Planned extraction route
• Noted active extraction beacons

Marathon - Complete Guide Hub

Marathon Database

Looking for a full breakdown of every weapon, runner, core, implant, mod, and item? Check out the Marathon Database — a complete interactive reference with filters and hover details for all in-game content.