This one has some beautiful design decision. Like health being dots on dice. All enemies could use same, no need for flying UI-pointers (even though they are too dices). Would be complete Nintendo approach for problem.
I think you should update it to more flexible twin stick style. Up the aggression of enemies and turn it faster and more fun, chaotic but focused experience. Also attacks needs better visual feedback. Put those Rayman-style hands in use and make them hold guns, punch and show taunts.