He was pretty hard for me at first,i tried a lot of different combos some worked some didn't.
What i did to beat him was the combo B,B,Y,Y,Y,Y.that does 3 kicks,3 slashes and a jump slash.with the jump slash you some times dodge his attacks.He will jump around a lot dodging but if you keep doing that you can kill him.
also attack him when he jumps into a crouch he doesn't block then.