A whole YEAR?! I beat him in, like, two minutes!
Okay, MY strategy is keep jumping, because he throws bombs n stuff. I think he has cards. When he needs to re-shuffle his cards, attack him, and keep attacking until he throws the bombs. Try jumping towards him and attacking him then. It will stop him throwing the bombs for a short while. If you keep getting hit by the bombs, keep using clear. But make sure you dodge them.
Hope that helped,
.::Lunar::.