Oh wow, a multiplayer game, with a solo mode and a little IA. In 48h ? You madman.
About the game in itself : using the theme for a 1v1 game is neat, that's the first one I see ! The gameplay is interesting, it's some kind of sumo, but with extra steps ^^ !
Just a little note : reseting the music at each round is not a good idea : it makes the music really repetitive, especially because rounds are usually shorts ^^'. Otherwise, nice little game !