Marathon Loot Guide: What to Keep, Sell, and Extract

The Extraction Economy: Why Every Loot Decision Matters

Marathon's economy runs on a simple but brutal principle: loot only has value if you make it out alive. Every raid on Tau Ceti puts you in a high-stakes loop of looting, risk assessment, and extraction decisions. Die before you hit an extraction point, and everything in your backpack is gone. Extract clean, and those items convert to credits, advance your faction upgrades, and fund your next run.

This creates a constant tension between greed and survival. A fully loaded 40-slot backpack packed with schemas and salvage is worth nothing if a rival squad ambushes you at the extraction point. Understanding what to pick up, what to leave, and when to cut your losses is the foundation of becoming a consistently profitable runner. This guide breaks down every loot category, explains how to prioritize your limited backpack space, and gives you a clear framework for making good decisions under pressure.

Loot Priority Hierarchy: What to Grab First

When you are looting under time pressure or approaching a full backpack, use this priority order to make fast decisions about what stays and what gets dropped.

1. Unstable Salvage: Unstable Biomass, Unstable Gunmetal, Unstable Diodes, and Unstable Gel are the most valuable materials in the early game and remain essential throughout. These items feed faction upgrade trees directly, and you can never have too many. Always pick them up.

2. Weapon Schemas: Schemas are permanent crafting blueprints. A schema for a weapon like the V00 Zeus RG, Conquest LMG, or ARES RG gives you the ability to craft that weapon indefinitely. High-tier schemas are among the most valuable items you can extract.

3. Implants: Implants are the bedrock of your runner stats. Even if you cannot use a found implant yourself, they sell well and are worth the backpack slot. Never leave a high-rarity implant on the ground.

4. Keys: Zone keys and prestige keys unlock rooms containing high-density loot. Carry them only if you have time and a safe route to use them. A key is worthless if you die before reaching the locked door.

5. Faction Valuables: Items like Traxus Valuable, Arachne Valuable, CyberAcme Valuable, MIDA Valuable, NuCaloric Valuable, and Sekiguchi Valuable sell for solid credit value and take up minimal space. These are excellent backpack fillers after your priority items are secured.

6. General Salvage: Standard salvage materials like Fractal Circuits, Drone Resin, Cetinite Rods, and Deimosite Rods are still worth grabbing if you have space. They feed faction upgrade requirements and can be sold for credits.

7. Weapons and Gear: Looted weapons are situationally valuable. Grab a weapon upgrade if it is a meaningful improvement over what you are carrying, but do not haul out mediocre gear for marginal credit value when you could use that slot for salvage or a schema.

Salvage Materials Explained

Salvage is Marathon's faction currency. Unlike credits, salvage items are consumed directly by faction upgrade trees. Each faction has specific material requirements, so what counts as priority salvage depends on which factions you are actively leveling.

The Unstable tier is the most critical: Unstable Biomass, Unstable Gunmetal, Unstable Diodes, Unstable Lead, and Unstable Gel. These materials are required at the very first tier of most faction upgrade paths. They are relatively rare, so whenever you see one, take it regardless of what else is in your pack. If something needs to go to make room for Unstable Salvage, drop it.

Below the Unstable tier, the CMS contains 20 additional salvage types: Biogenic Alloy, Hazard Capsule, Synapse Cube, Alien Alloy, Reflex Coil, Enzyme Replicator, Biolens Seed, Predictive Framework, Storage Drive, Neural Insulation, Amygdala Drive, Paradox Circuit, Ballistic Turbine, Cetinite Rod, Encrypted Drive, Conductive Filament, Surveillance Lens, Drone Resin, Fractal Circuit, and Deimosite Rod. Each of these feeds into different upgrade nodes across the faction trees.

Practical rule: if you have a faction upgrade pending that requires a specific material, that material jumps to the top of your salvage priority list. Check your active upgrade requirements before heading into a raid so you know what to focus on.

Salvage items also carry credit value when sold, so even materials you do not need for upgrades right now are worth extracting if you have the backpack space. Do not leave salvage on the ground when you have empty slots.

Weapon Schemas: Permanent Crafting Unlocks

Weapon schemas are blueprints that permanently unlock a weapon for crafting. Once you extract with a schema and register it, you can craft that weapon in future runs from the Armory. This is one of the most impactful progression systems in the game, because a good schema removes dependence on finding that weapon in the field.

The CMS currently lists schemas for 23 weapons, including: V95 Lookout Schema, V11 Punch Schema, Conquest LMG Schema, ARES RG Schema, Bully SMG Schema, WSTR Combat Shotgun Schema, Outland Schema, CE Tactical Sidearm Schema, Magnum MC Schema, V22 Volt Thrower Schema, V99 Channel Rifle Schema, Longshot Schema, V75 Scar Schema, Retaliator LMG Schema, V00 Zeus RG Schema, V66 Lookout Schema, BR33 Volley Rifle Schema, V85 Circuit Breaker Schema, Hardline PR Schema, Demolition HMG Schema, Twin Tap HBR Schema, Misriah 2442 Schema, and Overrun AR Schema.

Priority schemas are those for weapons you actively use or plan to build around. Heavy weapons like the Conquest LMG, Retaliator LMG, and Demolition HMG are high-value targets since they are expensive to purchase from the Armory. Precision rifles like the Longshot, V99 Channel Rifle, and ARES RG are similarly worth prioritizing for long-range runners. Always extract a schema you do not already own, even if that weapon is not currently in your build. Schemas can be sold or traded, and having duplicates is never harmful.

Keys and Locked Rooms: High Risk, High Reward

Keys unlock access to rooms and areas containing significantly better loot than the open-world equivalent. They come in zone-specific varieties tied to specific map areas, and prestige variants that unlock the highest-tier locked rooms.

The core rule with keys: only carry a key if you have a clear and safe plan to reach the corresponding door. A key in your backpack is a dead slot if you cannot use it this run. Keys themselves can have significant credit value, but they occupy space that could hold two or three salvage items. Weigh that trade-off carefully.

Prestige keys are among the most dangerous items to carry. They signal high value and make you a priority target for scanning enemy squads. If you pick up a prestige key, treat your extraction as urgent. Do not linger in contested areas while carrying one. Plan your route to the extraction point before you pick it up, not after.

Zone-specific keys are lower stakes but still worth deliberate thought. Outpost, Dire Marsh, and Perimeter each have distinct keycard routes with well-documented loot rooms. Learning one or two efficient keycard routes per map dramatically improves your per-run credit average.

Backpack Management: Choosing the Right Pack

Your backpack is one of the most important pre-raid decisions you make. Marathon has three backpack tiers, each with Base, Ammo, and Med Pack variants.

The 8XS tier (Enhanced rarity) adds 8 extra slots for a total of 24. The 8XS Base Pack is the starter option with no passive bonus. The 8XS Ammo Pack adds an ammo passive, useful for high-fire-rate weapon builds. This tier is fine for budget runs and early progression, but you will feel the slot pressure quickly when looting contested areas.

The 16XS tier (Deluxe rarity) adds 16 extra slots for a total of 32. The 16XS Base Pack is the sweet spot for most runners, unlockable via the CyberAcme Carrier+ upgrade at Rank 15 for 4,000 credits. The 16XS Med Pack adds a passive healing bonus and pairs well with consumable-heavy loadouts. The 16XS Ammo Pack suits aggressive multi-weapon builds. At 32 total slots, this tier gives you enough room to carry meaningful loot alongside consumables without becoming an overly lucrative scan target.

The 24XS tier (Superior rarity) adds 24 extra slots for a total of 40. This is the maximum capacity in the game, available through the CyberAcme Max Looter capstone upgrade. The 24XS Base Pack, 24XS Med Pack, 24XS Med Pack+, and 24XS Ammo Pack all offer 40 total slots with their respective passive bonuses. Superior packs mark you as a high-value target. Enemy squads that scan your inventory see a runner worth hunting. Only bring a 24XS pack when you are confident in your ability to fight or evade, and when you have a realistic plan to fill those slots with high-value items.

General backpack advice: match the pack size to the run's objective. Budget runs in low-risk zones? Bring a 16XS Base Pack and keep your exposure manageable. Deep loot runs targeting high-density areas? A 24XS Ammo or Base Pack justifies the risk if your extraction plan is solid.

Consumables in Raid: What to Bring and When to Use It

Consumables occupy backpack slots, which means every consumable you bring is a trade-off against loot space. The goal is to bring exactly what you need to survive without overcommitting space that should hold extracted value.

Core loadout (non-negotiable for most runs): a full stack of Patch Kits (3x) for health recovery, and a full stack of Shield Charges (3x) for shield restoration. Always bring Enhanced or standard versions of these. Depleted Patch Kits and Depleted Shield Charges provide minimal value and cannot be turned into credits at extraction. If you find Depleted versions in the field, use them immediately or leave them.

Situational additions: the Pangea Kit fully restores both health and shield simultaneously while clearing all status effects. It is the most powerful healing consumable in the game and worth bringing on high-stakes runs where you expect extended combat. The Self Revive is invaluable for solo play or high-risk duo runs. The Cardio Kick provides a temporary burst of stamina and agility, useful for escaping ambushes or rotating around flanking squads.

Status effect cleansers like OS Debug, Advanced OS Reboot, Mechanic's Kit, and Anti-Virus Pack are situational. They are worth bringing if you know the zone has heavy electronic warfare or toxic hazards. Otherwise, leave these at home and use those slots for loot. Do not fill your backpack with cleansers you will never use.

Budget consumable loadout: Patch Kit (x3) plus Shield Charge (x3). That is two slots used, leaving your remaining backpack space entirely for loot. This is the right call when you are running a lower-tier zone or need to maximize extraction credit value.

High-stakes loadout: Patch Kit (x3), Shield Charges (x3), Large Shield Charge, Pangea Kit, Self Revive. This setup sacrifices five backpack slots for survivability. Only worth it when targeting prestige content or running a fully stocked Superior backpack where losing everything would be a significant setback.

When to Extract: Reading the Situation

Knowing when to extract is as important as knowing what to loot. The most common mistake new runners make is staying too long. A backpack full of salvage and schemas is worth more extracted than a hypothetical second sweep of loot you might not live to reach.

Extract early when: your backpack is 75% or more full with high-value items; you have taken significant damage and are low on consumables; you can hear a rival squad nearby; or you have already secured a schema, a prestige key, or rare implant you cannot afford to lose.

Stay longer when: your backpack still has 6 or more empty slots; you have a safe route to a high-density loot area; your consumable supply is solid; and you have not encountered other squads recently.

Partial extraction is a valid strategy. If you are near an extraction point with a half-full pack of solid loot, extracting early and banking those credits is always better than gambling on a second sweep. Credits support your next run, and a safe extraction compounds over time.

Death and loot loss: when you die in Marathon, everything in your backpack is lost. There is no retrieval system. Your equipped weapon and armor are also at risk depending on the run configuration. This is the fundamental risk in the risk/reward calculation. Never carry more than you are willing to lose in a single engagement, and never convince yourself that just one more room is worth it when the situation is already deteriorating.

Credit Farming Tips: Efficient Loot Routes

Efficient credit farming is not about finding the single best item per run. It is about maximizing consistent extraction value across many runs. The runners who accumulate credits fastest are those who extract reliably, not those who occasionally land a jackpot and die the next three runs trying to repeat it.

Best zones for loot value: Perimeter is widely considered the best early-game map for high-tier farming. Dire Marsh and Outpost offer strong mid-to-late-game loot density. High-tier locked rooms in all three zones are among the most efficient loot sources in the game, which is why learning specific keycard routes for your main map is worth the time investment.

Efficient route structure: enter the map, head immediately to your priority loot locations, fill your backpack with the highest-value items available, then route directly to extraction. Avoid extended combat with NPC enemies beyond what is necessary to reach your target areas. Enemy kills take time and consume ammo and consumables that cost credits to replace.

Faction material farming: if you need specific salvage materials for an upgrade, research which zone has the highest concentration of that material before your run. Targeted material farming, rather than general looting, is significantly more efficient when you are trying to unlock a specific faction perk. Check the wiki's zone loot tables to identify the best location for each salvage type.

Avoid the hoarding trap: Marathon's vault is wiped at the end of every season. Stockpiling rare items rather than using or selling them is not a sound strategy. Extract, sell, upgrade, and run again. The faction perks you unlock from spending salvage will make every future run more profitable than holding onto materials ever would. Upgrade your CyberAcme backpack perks, your faction loot bonuses, and your runner stats as quickly as possible. The compounding return on faction upgrades is the most reliable path to sustained credit growth.