I saw this movie with absolute no expectation (except the possible link to the 2008 movie Cloverfield, and the trailers I had seen on television).
I have to say that this movie is absolute the bomb, Goodman is a great actor, and the suspense is being built from the first second, without absolutely no clue what's going on in the outside world, except what Goodman is telling us, from within his shelter. Is it true, or isn't it true?
All that suspense is gone, the moment the woman steps out of that shelter (which is approximately the last 15 minutes of the movie) and breaks it down completely. Without that part, I would given it an 8!