I really liked your calm intro. Caught me off guard when you made things more chaotic. I liked everything overall, but the one gripe I have with this is that at some moments, the synths and the bass you have just don't seem to match up with the timing. It feels off. I don't know if this is intentional or not, but it bugs me. I notice it especially at 1:15, but that only went on for a few seconds, so I don't know if you meant for it to be like that. It just gets to me, is all.

It might also do you some good to make your kick more heavy/audible. I can hear your clap just fine, but the kick is kind of buried, and that bass kick is important in dubstep tracks!

Overall, I like this. Just check your timing and make sure your drum pattern is real easy to hear!