It's often extremely unclear where you can walk and what you can interact with. If that were fixed, this would be an excellent game. As it stands, it's more of a pixel hunt than anything.
The one thing I would add to or remove from this game would be the ability to customize the controls. I cannot tell you how many times I died thinking A was jump and S was attack.
OK, I used the Heal spell, and I teleported to a random spot on the floor. And got killed. I respawned. I got hurt, tried using heal again, teleported again, died even more gruesomely, and got a game over. WHAT?
In the second boss fight, it should be MUCH more obvious that you need to jump into its bombs. Also, it should be possible to jump over the explosions of said bombs.
Other than that, this is a fantastic game.
Oh no! Try quitting and coming back, thos hasnt happened before. Let us know of it persists.