Separate moving and attack aim buttons could be nice and also for the animation part, some easing on some animations like swinging stopping would also be nice.
Really good, for those saying you can't multi- press, you can multi- type. Just use the numeric keypad. Would like a save feature.
One, thing, not sure if this game is stolen.
If you want to stay with a Mario feel and concept, this is fine. If you want to this to be a platformer, you need a lot more improvement and smoother character animation.