Cool game concept overall but needs some work. I think it is boring to read a huge block of text for the how-to-play screen I would recommend splitting it up in some way such as writing, "Use the WASD keys to move" on a wall. Another way to split up your dialogue to make small amounts of text appear on the screen and when you press space or something it moves on to the next line.
P.S. I would really appreciate it if you take a look at my game, Pitch Black.