Well i was alittle worried that you didn't go heavy enough at the start but then you introduced the drums and i have to say that it has to be one of the better heavy metal pieces i have heard. Overall very well done, loved that quick note hitting near the middle of the piece with the guitar.
Cool song. From what I hear, you use Flstudio, no? There's one thing your songs miss and that is a bass guitar. Use it and love it! =p