Very fun
The combat system is easy to master. Gameplay is fun and deliciously gory. My only complaint is that after winning 2 games in a row, people start bitching that your hacking. I know that's not your fault though.
To other players: You being pathetic doesn't make me a hacker. How low would my self-esteem have to be to get an ego boost out of cheating to win at an online flash game?