This is really cool. The visuals are really good for this game. I do have a few small criticisms though.
I'm not sure how far away some of the enemies can hit me from, or even when they're attacking me. I assume this is probably to motivate the player to use their summons, but it still feels pretty unfair.
I can't tell the enemies' damage numbers from my own damage numbers. It would help if they were different colors.
When I hug the wall when moving around the rooms, I get stuck in the places where the doors are supposed to appear.
Despite these issues, the game is very fun.