Interesting...
It has nice moments, it really does. But the sound seems to be muffled or something. It doesn't seem to be coming through clear. Especially the kick and guitars. Check your settings for those instruments, because they all sound muffled.
As for the riffs themselves, they aren't too bad. I like the part around the 1:25 mark. Very cool slow section.
I think the drums need to be worked on as well. The beats aren't terrible, but the sound itself isn't the best. Everything in this song seems like it went through a filter that sucked the life out of the song. Not sure whether you meant to have that kind of sound or not.
3/5 and 5/10 overall, because this isn't bad, but still needs a lot of work. Good luck with it man!
-Gravey-