This is a guide to using access codes for locked doors, supply drops, and getting into Pinwheel on the Outpost map in Marathon.

Cryo Archive is designed to push Marathon players to their limits, but its first challenge is working out how the heck we get in there.

Make sure your outfits are worthy of five stars with these DTI codes. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.