Overall, an expertly made piece- it was immersive, well mixed and had a definite 'alien invasion' feel to it. However, I personally felt it needed a definitive melody once it picks up into the latter half. The suspense of the first half leaves the listenener anticipating an onslaught of musical intensity- which certainly seems to deliver- but I kept expecting a powerful melodic section to kick in, to really make it unique and 'stand out' from pieces of a similar contextual basis.
As it is, it's an absolutely phenomenal track, but it's a little too generic and repetetive to secure a solid 10/10. It's possible that I'm being overly critical, of course, but when music is as good as yours, it's hard to find areas for improvement!