Beating a dead horse.
Maybe it's just me, but these Sonic sprite flashes just don't offer anything new or interesting to anyone who has scene even 1 decent predecessor. The story was unimaginative and predictable, your use of voices were infrequent and most of the fight animation was repetitive and simple.
Also, I personally don't like the sprites animating on the spot. Despite that it may show more effort to your animation it just doesn't seem realistic.