my thoughts about this:
0:00 - 0:41 good intro. maybe a little lengthy, but not to the point of being annoying. the drum sample with the delay effect is annoying though. if you were to turn the cutoff on the delay effect down it wouldn't get so annoying. changing the reverb effect might sound nice to.
0:41 - 1:21 great buildup! nothing needs to be changed there.
1:21 - 9:21 so basically the rest of the song. mastering on the drums needs a little work. the kick drum needs a little more,..,backbone?..to it. lead synth's pretty amazing! bass might need just a little more sub.
the song does get somewhat repetitive over the full 9:21 seconds. shortening some of the buildups may help with this problem.
5/5 9/10 nice!