\m/
I like the riffs, they are pretty catchy and the rhythm is good, too. But overall the sound quality is too thin. The drums are too quiet, so that one can hardly hear them - and unfortuneatly the sound of the guitar is very bland, too.
Also, the song gets quite boring towards the end, but that's the problem with nearly all instrumentals. There are very few instrumentals out there that keeps the listener interested the whole time.
As a final remark it can be said that you've done quite a good job here, but you have to improve your sound quality a whole bit.