What an neat concept. I like the art a lot! The intro cinematic is interesting. Although, the video is very, very loud compared to the other audio.
Full disclosure: the game immediately full-screened on start, which ended up looking like this:
The resolutions seems to be too large, but I appreciate the effort to keep the art accurate.
My biggest criticism is that the rooms don't seem designed to be walked into from all angles, especially from below. Most often I died because I walked into a room and was instantly hit by an enemy. Multiple times, I went up into a room and got stuck inside of a hole in the floor. It's quite frustrating.
All-in-all though, good work! Congratulations on the submission!