I could only play for second, so I'll give it a more thorough play-thru later. My first comment would be to either have movement snap to grid or do a check to align the player with doors/doorways. Right now, doors that are in the middle of walls can be a pain sometimes since there is no forgiveness - you have to be exactly in line. I like the ambiance of the dungeon as well as how startling it is when enemies appear in your light radius.