I really liked it! I enjoyed how you dropped the players in the dark and then slowly drip-fed them clues about the past. The monochromatic aesthetic is really neat, and the metaphor of therapy as navigating a maze is super cool.
I did notice that sometimes when walking my character would sometimes teleport forward/backward for one frame. I also experienced some ui text bugs, where I couldn't read some of the text.
But yeah. I really liked it! Great concept, great execution.