Your use of "Fog of War" really elevates the game. My only complaint is getting stuck while trying to go down holes that look the same size as the player. It almost feels like there is sub-pixel movement.
Hah, there actually is sub-pixel movement. The character collision shape is actually a small triangle (to help with jumping up 1-block gaps) - maybe I could make it a pentagon to help with falling down too, I haven't thought of that.