Atomfall's Interchange is home to many mysteries. In order to access the Site Office, you'll need to find the Site Office Key first.

Sneak into Skethermoor with this hidden passage. The key can be acquired even if you haven’t unlocked Skethermoor. The lower area can only be accessed if you restore power to Data Store Delta or Bravo ...

Atomfall offers plenty of optional side content to explore after completing the core narrative, with hidden batteries, guns, collectibles, skills, and achievements to discover. Leveling up every gun, ...