Besides providing a vehicle for revealing Marathon's lore and worldbuilding, the Factions represent your overall macro progression.
This is because, while you can lose your loot during a run, Faction progression maintains during a season.
As you do missions for each Faction, you build up your reputation and unlock Upgrades that make your life easier and make you stronger over time.
For example, these include stat improvements, more inventory space, access to better purchases in your Armory and so on. You can even upgrade your
Rook!
Cheat Sheet for Each Faction
Every Faction provides many perks, but here are the general trends.
Cyberacme
- Improves your economy potential (credits, Vault space, Backpacks)
Heat Capacity stat upgrade
NuCaloric
- Improves your survivability (
Shield Charge,
Patch Kits,
Self Revive, status effect mitigation)
Self-Repair Speed stat upgrade
Traxus
- Unlocks more weapons and weapon mods in your Armory
- Improves TAD and pings
MIDA
- Unlocks more explosives, traps, and implants in your Armory
Agility stat upgrade
Arachne
- Unlocks more weapons, weapon mods, and implants in your Armory
- Improves melee ability
-
Finisher Siphon stat upgrade
Sekiguchi
- Unlocks more cores and implants in your Armory
- Improves cooldowns for Prime and Tactical abilities