I must say, I just ended up mashing z,x and c, and just being confused... Hard to move/seem to move randomly/cant see where most ove the time because of explosions and other effects. Has possibillities, but is obviosly a work in progress. Is the fight music from "Ape Escape"? :-)
We pushed a bug fix to fix this, v0.6.0.1! Thanks for the report!