Since this is a mystery escape room game, all of this is SPOILERS:
Man I was very convinced this game was gonna try to jumpscare me. I think my one actual criticism is that when clicking on certain objects there isn't a clear visual /auditory indication that the click was registered. So when solving one of the puzzles I didn't know if I was doing the wrong inputs, or if I was just not clicking exactly where I needed to in order for the inputs to register. Possibly highlighting the object, or a tapping noise, or both of those things would have helped here. (Trying to avoid spoilers but you should probably know if which part I'm talking about by reading this!)
But, the atmosphere was excellent, the puzzles were challenging and varied. My one not-a-criticism is just that I wish there were more; and that's not because it was 'too short,' I just legitimately would have enjoyed playing more of the puzzles! It took about 40 minutes to solve for me though so, again, this isn't a criticism just a wish haha.
Oh, art was outstanding!