A very stylish game!
One suggestion, though: in singleplayer mode, you can move your bug with the controller but there seems to be no way to rotate or charge your attack. At least, none of the controls on my old 360-type controller did that. That confused me a bit during my first few rounds. Not sure how multiplayer handles it (I only have one controller, so I can't find out), but rotating with the right stick and charging with A or something like that would probably make sense.
So, if that worked in singleplayer mode, it would be cool. Or alternatively, don't use the controller in singleplayer mode at all. Having a controller react to your inputs but still relying on keyboard/mouse for a few functions seems a bit weird.