Prey guide: 'Do No Harm' optional objective walkthrough - Polygon
Prey - First Safe Code | AllGamers
Prey Passwords and Keycodes - All safe codes and door codes - Maintenance Tunnel, Hidden Treasure, Security Booth - Cheat Your Way to Success | USgamer
Prey Debriefing Room Safe Code Location - YouTube
How to Unlock The Debriefing Safe at the Beginning of Prey | Attack of the Fanboy
Prey - How to Open the Safe in the Simulation Debriefing Room and Gain Access to Yu's Office in Talos 1 | USgamer