Nice proto! Reminds of me of the dark labyrinth on Adventure for Atari 2600. The menus are kind of confusing tho.

It's an interesting idea that could be a lot of fun with some more work.  One thing I did notice was some odd collision handling.  Sometimes I could push against a wall and when I released the key the player would start moving the opposite direction even through I wasn't pushing anything.  It seems to range from just a small drift to a large bounce back.

It's a good thing the light went through some walls. I think it needs some work on that main concept.
Bigger halls would also help as it's rather cramped given the freedom the player has.

I like the idea :) Overall it was a bit dark on my computer, even with the flash light I couldn't see much. But it created a nice atmosphere!