So the game visually looks really good,
For the first room, "year" was spelled everywhere so we figured out a code which turned out to be for the safe, but everything was too dark that I never actually saw what was inside😂
I looked around for a bit but couldn't figure out what to do, so I came here and realized you commented an answer, the thing is I kept trying numbers bc I didn't know we can actually use words, and I couldn't find clues for that.
The second room, the voice keeps repeating "this room has a war theme into it but I can't remember which one" which after a few minutes get super repetitive and super not helpful😂
I can't tell if the clues are available in-room or if the voices should tell me, but if the voices then the clue should be more frequent than others
I couldn't figure out the code for the room though.
So usually for puzzle games, the rule of thumb is if its easy for you its probably not easy for your players,
All in all, the concept is really cool, the ambiance and looks of everything are nice.