Marathon's Endgame Lock: Kill 500 Million UESC Robots to Unlock Cryo Archive

TL;DR
Marathon’s endgame Cryo Archive unlock is gated behind an ARG that requires players to kill a cumulative 500 million UESC security bots; at about 315 million killed so far, the reveal could slip into next week, with fans wondering if Bungie will add twists akin to Helldivers 2’s evolving galactic war.
- Marathon Just Became Helldivers 2 With Cryo Race To Kill Bots Kotaku
- New 'Cryo Archive' Launch Trailer Promises A Confrontation With A Classic Marathon Enemy Game Informer
- Marathon players finally unlocked its secret last area after 2-week ARG Polygon.com
- Welcome to Cryo Archive Bungie.net
- Marathon Players Are About To Solve Its Weeks-Long ARG aftermath.site
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