At first I thought the game wasn't all that great until I got the hang of the controls and remembered its suppose to be played multi-player and online. Its a pretty bad-ass game. However, the controls are fucking retarded, and the character is a bit clunky. Also, why does the bow gun not use IR? WTF.
My roommates and I have beaten both bosses, I'd recommend using the long-sword dude or the lance chick. Don't use the bowgun people, they are boring, their controls are ass, and they don't stand a chance without a party because they can't stay a safe distance from any enemies.