A really uncomfortable experience in the best possible way! All of your design choices work really well to build a real sense of anxiety, especially the combination of slow movement speed, the long waits and slow reveals for new environmental scans and the useful but also unnerving audio sensor.
The audio design works very well, with my favourite moment being a loud banging noise from behind a door I couldn't find a way around to- I felt a weird sense of both guilt and relief that I couldn't find a way around to discover what was making that sound!
My only suggestion would be some way to get a sense of your location - I think a minimap would be too much information, as letting the player get lost feels like it really helps the experience here, but a little something to aid in navigation would definitely help for the return trip. Maybe even just a compass?
My final score was $10,500