This is just amazing. One of the few Madness tributes I've seen that's almost as good as the real thing. I loved how it felt like a video game, with the respawn checkpoints and everything. I don't usually love dubstep, but here it just worked so well. You should be really proud of yourself.
If there's anything to improve, it's possibly the quality of your shading. Try using gradients a bit more (for example, on the tubes and stuff). Other than that, perfect.