Are you grading it on the "it made me want to vomit curve" or not?
The shaky-cam didn't bother me. Might have been different in the theater.
It's a movie that could have went wrong in a hundred different places, but didn't. No patriotic speeches, no explanations, no soapboxes; none of the crap that plagues this type of movie.
People running from monsters. That's all they needed and that's all they gave. Well done.