Liked the concept of banishing the evil spirits, though something visual was clearly needed to make it understandable that pressing space does indeed work. So there is everything for a good fondation - movement is fast, small inventory-like system with interactions. It looked neat enough too and dark corridors were mixed with lit ones as well as spirits luring around - quite a creepy experience.
Just need a couple of sounds for better atmosphere + a little feedback for an attack and it would be a very solid little game indeed.