Incredibly badass.
It wasn't clean. It wasn't pretty. But the animation was slick as hell, the music rocked it just right, and you set your scenes up nice and interesting. The story was simple, but it did what it did very well. You're characters, both villainous and heroic, we plain but engaging and well designed.
My recommendation here is to work at cleaning up your art. Line consistency. Smoother volumes. That sort of thing.
Still though top notch and very enjoyable.