Haven't seen any other stuff you've made....but...
Good points: the sound was in synch with each hit, and the attempt to go from a peaceful score in the background to a fight song wasn't forgotten. I'm working (well, not really) on sprite animation myself, so your work was pretty solid...to get a higher score though, ya gotta impress the masses :) To do that i'd suggest a smoother transition from a peaceful to a fighting atmosphere, add some weapons effects (I know Kain's no Kung-Fu master) and some kind of a beginning-climax-conclusion kind of buildup. It went from zero to 60 in 3 seconds...and that's a bumpy ride :)