I actually liked this quite a bit. I think my biggest complaint (other than the lack of any sound) is the fact the levels are so big and empty, it's sort of hard to know where you're going or where things are. Like the minimap is impressive, but since it just shows a grid instead of like... where walls and stuff is, it's only useful at telling you the general direction something is. I was doing pretty well, without dying, but eventually I got to a part where there were enemies in another area (probably thru a warp) but I had no idea how to get to them. It was frustrating to end the run like that.
The aesthetic of this game is minimal but it works pretty well. Good job :)