Really liked what you were going for and i thought the atmosphere was fantastic.
for criticism: i think the jump is way too floaty, doesn't feel like you are jumping . i get what you were trying to do with the wall mechanic but its just weird ;/ other than that i dies a couple of times from stuff i couldn't see which was frustrating.
I think the game really makes you feel like you're stuck in hell which is very good but maybe it sacrifices a bit too much of the gameplay in order to convey this feeling.
Still a pretty unique game which accomplishes most of what it tried to do, good work!