I like the climactic nature of it at the beginning, and the instruments worked well together. It does progress a little slowly, but I thought the drop at 1:05 was really cool. The kick is a little too loud IMO (even for dubstep), but I liked how you were going for something a little less heavy-hitting. Throughout that whole mid-section from around 1:30-2:30, I felt like it was a bit bare. You may have needed another harmony part or something, just to keep it engaging. Also, I thought it was a bit bizarre that you used the kick so abundantly at 3:15 (as well as other places) in order to transition into the drop. The snare is usually used to make smooth transition more so than the kick. It does get a little repetitive, but I still thought it was pretty cool overall. Nice instruments and mood. Maybe a little more melodic development and dynamic contrast would have added something. Anyway, keep at it, man! ;)