Good take on the theme! I like that you just get right into more interesting uses of the resurrection mechanic. I feel like the staff charging mechanic is pretty unnecessary, since the more thematic part of the game is resurrecting enemies after they've already died. A simpler attack that didn't charge up would probably have sufficed, and might have saved you a little bit of development time that you could have spent adding more levels. A few sound effects would have been nice as well.
I'd love to see more!