This is pretty decent. I feel like there's potential here for a larger game
A few things:
You shouldn't spawn in with enemies already on the screen
Similarly, wreckingball should give you some invincibility frames when you leave it (also, it probably shouldn't last as long as it does)
The third spell seemed kind of useless. Like the hitbox was really small
Needing to die to get promoted doesn't seem right
It tells you to reach the highest level possible, but nothing happens when you do