Nice mood for sure, and the look was lovely.
I must confess. I didn't make it to the end. The hallways all felt the same, and there was nothing I could use to tell one from the other, so I felt like I was just wandering around in the dark. Maybe some stakes (a monster) or a prize (A friend or memory trapped in my mind that I had to save) would've kept me pushing through.
I hope you keep working on it though. It's a cool idea.
Cheers.
- D