First of all: The atmosphere of the game is awesome! The Sound is really good. The art is really nice, too.
I like this approach on the theme. fits very well.
The core mechanic of the maze is a nice concept and fits the game but could be polished a bit more, as mentioned before. It is sometime really hard to see where the ground is and where the holes are. Even with more lights near the player.
Great Work after all! Thanks for sharing.