Cool game which I enjoyed trying. Had the same issues as Beregon. some more room to move around the enemy and tweaking the speed so you was faster would be nice.
I found that with the enemy following me into the puzzle room upstairs I just went straight for the auto solve to simplify the room.
May be nice if they stayed outside banging to build tension and when you leave they was stunned for a small amount of time for you to get passed.