Very easy to pick up and play, interesting use of the theme and would certainly be a nice game if you continued development.
Possibly add checkpoints as I found myself getting quite far only to lose all progress because I happened to pick something that wouldn't help that level then dying.
If not checkpoints you could allow the player to see the level beforehand then decide based on a points system what abilities they need to take into the battle, allowing them to vary up their strategies during the game.
Regardless, I would like to see this taken further it has potential.