I'm marking this movie with five stars because, despite what some of the troll 'reviewers' wrote, it did have several good points. Even better, it made me want to watch the whole movie, see how it ended, and see what happened to the characters. Trust me when I say, this is a rarity!
Good points: The acting was (in my opinion) above par for a low budget alien movie like this. No one was wooden or unbelievable, and, as mentioned, they made me want to at least see what happened to the characters in the end. A plus.
Concept was also pretty good and the script, while unevenly paced, moved the alien concept along well. It took its time developing the characters, and when the action started, it started with a bang and moved fast and hard to the conclusion. Also plusses.
Downsides start with the photography. That shaky, hand-held camera work is irritating and distracting from the scenes - a lot. The ending charged through a concept barely mentioned in the rest of the movie. The use of deus ex machina rather than developing a more satisfying - and reasoned! - conclusion was a bit of sloppy scripting that detracted.
On the whole, I WAS glued to my set during the action, I was glad I took the time to watch the movie, but I won't be going back to see it again.