The overall atmosphere of this game was incredibly well done, it had an eerie undertone through it and navigating the world only added to this. I saw you mention that the game was punishing by design so I won't mention my very obvious skill issues whilst playing this game LMAO.
The audio and art was really well done though and worked insanely well together, it created such an interesting atmosphere and it made me feel tense (in a good way), I do agree with people that the lighting could've been a little bit stronger to make it a tiny bit easier to traverse, I think it would also help in being able to see more of the level and be able to take in those graphics a bit more.
Overall, it's honestly a pretty good submission :)