Marathon's final Cryo Archive unlock hinges on a 500M robot takedown and a shrinking puzzle grid
TL;DR Summary
Marathon’s final Cryo Archive map unlock requires defeating up to 500 million UESC robots. With ~330.5 million kills so far (about 66% done), progress could speed up as the end nears if kills increasingly count toward the total. A new symbol-matching grid puzzle shrinks as each million robots are eliminated, making the two-part challenge—combat and puzzle—the path to unlocking the Cryo Archive next week rather than this weekend.
- Marathon players must blast through 500 million UESC robots to unlock the Cryo Archive map, and it may not take as long as you'd think Eurogamer
- 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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