Pretty nice
Good to see another E rated flash from you ;)
As of the animation itself, the fbf was great, it's a plus that you drew the characters with your own style instead of with Dan Paladin's, and the choice of music was good (I didn't even knew there was a full version of the Castle Crashers theme with better quality). The effects of fire and lightning were great too.
The only thing that bothers me are that it's WAY too short, so when it just started to get interesting it cuts, it was disappointing. Also, as others have mentioned, it's not the best idea to use the prefix "CC" for Castle Crashers, because most will think it means "Clock Crew". Well, I hope you keep making more stuff like this, 9/10 and 4/5 for you this time.
PS: The first time I played the game, I chose Red and my brother chose Orange (Soooo to me Red won in this flash xD)