"The way of the stick."
http://www.evolver.co.uk/wayofthestick.html
The reason I'm linking it here is because, despite the variety of attacks available at your disposal, the only way to get high score at this game is to throw people into one another ! (use the "V" key)
Otherwise you end up standing in one place for too long exchanging strikes, and you get overwhelmed.
Oh and it looks spiffy.