START Before leaving base camp
Beginner Guide
The best first run is not about being fast. Set up your audio, agree on a callout style, and make time for every chapter as a single co-op session.
METHOD Solve it together
Walkthrough method
Check voice before the first puzzle
Both explorers should hear and speak clearly. Decide whether you will use the in-game radio or a separate voice channel, then test it.
Choose a shared callout format
Use a simple pattern: object, feature, position. For example: 'Panel, four circles, top left.' Your partner can repeat it to confirm.
Plan your time
Avoid beginning a chapter when either player must leave soon. Give yourselves room to observe, discuss, and solve without rushing.
! Full-solution direction
When you are ready for the nudge
Use clear voice communication, describe the environment before interacting, and treat each completed chapter as a natural break point. Some comparison layouts vary, while many chapter answers are fixed; each walkthrough marks the difference explicitly.