Tips-
Make sure to glance at the doors regularly. If you see a face then close that door or you will lose very quickly. If you solve the game fast enough, you can just leave the doors closed the entire game before power runs out.
Step by step guide with hints-
Back wall
1.
Hint:
Solution:
2.
Hint:
Solution:
3.
Hint:
Solution:
Left wall
4.
Hint:
Solution:
Right wall
5.
Hint:
Solution:
6.
Hint:
Hint 2:
Solution:
*** Spoiler - click to reveal ***The first letter of each name on the posters corrospond to the number for the safe. The code is left to F(6), right one full cycle then to P(16), left to M(13). This will give you access to half of a cypher.
7.
Hint:
Solution:
Floor/Front wall
8.
Hint:
Solution:
Left wall
9.
Hint:
Solution: