It was supposed to be dark, the end itself was where all the lighting and white tiles are. I am aware you need to add light strips and windows to light up maps (hence why my other maps do this)

Though I suppose you could add lighting in some places, best around corners near the floor I guess.

Feedback:
Very dark. This is a common problem with new maps.
Its a good concept, I liked playing it.

I just realized that this idea could be used for dungeon crawler type maps.