Awesome game. I got stuck on enemy running away. Couldn't hit him, but I wasn't very good :)
I Love what you did with textures and the colors you used.
Didn't quite understand what to do with mana, but I wasn't that good to fill it up anyway :)
Thank you for playing! Mana is used for combos (pressing two buttons together). Doing combos is actually needed to defeat the bosses (especially the last two). Maybe I can explain mana and combos more clearly in the tutorial.