Very. very nice! There aren't many other players around at the moment, so it's not much of a multiplayer game, but it's a fun beat-em-up, and I LOVE these graphics. The characters look interesting, and it might be fun to add a bit more backstory for them. (My personal favorite is the shark in the noir-detective suit.)
I'm not entirely sure about the simple control mechanics (right arrow for forward attack, up arrow for air attack, etc). The proper strategy to use with these controls is a bit unclear to me--aside from 'hit a given key and hope the other guy doesn't respond with the counterattack'--but I've never been very good at fighting games, so it could easily be my fault.