What I liked:
The action when it finally kicked off, was worth the anticipation. The Alien weapons were very cool. I also loved the documentary style the first half of the film was shot and how it blended in to an actual movie. I also liked the character arcs. The main guys I didn't like until toward the end of the film. I loved the real feel of the aliens, the ship and everything.
What I didn't like:
The F-bomb. Over and over.
Fun movie. Great on Blu-Ray!!!!