Good job creating a creepy claustrophobic feeling. You definitely crafted a vibe. The music and sound effects were subtle until the jump scare and then heart pounding.
I stopped playing because I literally couldn't turn around to run. Since the mouse pointer wasn't captured in full screen and I have four monitors, my mouse kept sliding off to the left and right and I literally could not turn around. I could slowly pick up my mouse and get around that way. So the jump scare was the central part of my gaming experience.
Overall, well-crafted creepy experience.