Really great project mate! a lot of interaction and trial & error. Unfortunately, I didn't manage to finish it in time after around 10 tries :D. Great asset design. I think adding some more sound effects to the interaction and changing the code to leave the room each time the player restarts would be a nice touch. I think not having a visible timer adds a lot of tension to the gameplay as well.
Well done with getting this level of polish *Thumbs up*