The character animations and UI look great. Did you make all the visual art yourself?
I was a little confused about the combat system - sometimes I was just hitting the air, when I thought I was hitting an enemy. One thing you could do to reduce that confusion (besides altering the combat system), would be to add a sound for when an enemy is hit. That's vital feedback, in my opinion :)
But it seems like you put a lot of effort into making this. Well done :)