Very fun to move around, I found myself moving to the beat of the song even though I could have taken my time for each move now that I think about it (probably because this reminded me of crypt of the necrodancer at parts).
I would love to see a system where it shows how many points you get for killing the slimes and maybe different new enemies! I found myself super happy stringing combos together so I can imagine showing combo multipliers for killing multiple slimes with one spell would entice more players to do the same!
Great stuff! I can't wait to see where you'll take this (if you pick this project back up in the future of course)