I like the idea of using only fighting game style combat for movement. the controls could still have room for improvement though. My main comment is that the level design could be made to suite more with the move set. the 1 block height slopes don't work well also you can cheese through most levels by reaching the high point and do some infinite side stepping. (the boss can also be cheesed by standing at the edge of the high ground).
with that said, I really like the art for this game. It is cute. Overall this game had some potential, I would love to see the movement mechanic get expanded.