This is pretty heavy...
I'm not completely sure about the intro to this song, but the main part is heavy. I think it could probably do with a change of lead synth. I really didn't take too well to it. The melody is fine, but the actual sound was quite ear piercing.
Other than that, this tune is phat. Keep it up man and hopefully we can bring more dubstep to newgrounds.
P.S. I don't usually ask for favours in return for reviews, but if you wouldn't mind checking out some of my dubstep tunes and possibly leave some criticisms it would be hugely appreciated.