Hey!
The music fits the game and you respected the 64x64 restriction.
The mission was pretty clear, but I found that combat was pretty frustrating.
The initial spell, fire, only seemed to work in a melee distance. The thing is that I felt that collisions worked against me because when I approached enemies to hit them, they hit me first because their box collision is too big. So it's difficult to maintain high HP.
You could also add some more feedback to the game. Sometimes I hit enemies but they don't flash, as if they didn't take any damage.
I hope that helps!