Lacks Structure
You really got something going here. One BIG problem though: the beginning sounds pretty bad. Once you get to a full build, it sounds great. But at the beginning, it sounds empty and bland. Deserves a 4/5, but I'll 5 it just to be nice. ;)
~ DSM
Check out my new piece: http://newgrounds.com/audio/view.php?id=1682211&sub=62416