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Bungie’s fix for Marathon’s PvE problem comes with a strange asterisk: the loot you find inside its new mode never makes it out with you.
Vault Breaker arrives alongside Marathon’s mid-season update in July, built specifically for players who’ve kept their distance from the game’s unforgiving PvP loop. It’s set inside Cryo Archive, the endgame map that’s been live since 20th March, repurposed here as a raid rather than a hunting ground.
Marathon Season 2 cinematic trailer
How Vault Breaker actually works
Squads, duos, or solo players gear up with a Sponsored Kit before dropping into Cryo Archive, working through vaults that get harder the deeper they push. Survive long enough, and the run snowballs, each cleared vault feeding strength into the next.
A grand vault waits at the end of the circuit, home to what Bungie only calls a “mysterious entity”. The Compiler is the community’s best guess, though Bungie hasn’t confirmed it.
What players can’t do is walk away with any of the gear they pick up along the way. The only thing that survives extraction is Vault Data, a freshly introduced currency that goes toward upgrading the Sponsored Kits tied to the mode.


Bungie has explained the thinking behind that restriction directly. The aim, in the studio’s words, is to let players experience Cryo Archive “without flooding the economy with low-risk, high-power Cryo loot.”
It’s a sensible safeguard for the in-game economy, even if it leaves Vault Breaker feeling more like a gear treadmill than genuine extraction. Marathon, still chasing a player base months after its March launch, may not have much room left for halfway measures.
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