I enjoyed the game, but a couple quick notes:
- as others have said, enemies seem to have a lot of health. six hits is a lot for most of the attacks
- I liked that all of the elemental attacks were a bit different, and if anything I think more variety could be added to make each element seem more unique. Lightning was its own thing, but the others mostly just varied in range. Maybe as an idea, earth could hit in all directions and fire could let you hold the button to keep doing damage? just spitballing here.
- Might want to get rid of the stairs tile and other sprites in the treasure room. I ended up playing through the game a second time to see if they did anything and was a bit disappointed when they didn't
Generally had a good time though, and the art was really nice in particular. Good job!