Watched 28 weeks back in May;

Not quite as harsh as Puzz3D's review; but there are certainly some glaring flaws in the story line, and character development is fairly little. Altogether not as good as the first, and the Story gets a little over the top in some places. Seems more like a filler that will connect the 1st to the movie after 28 weeks. If you allow yourself to actually get sucked into the movie and keep an open mind about it, there really is little need for Character Development, the situation itself is utterly despairing, more depressing than scary (or maybe depressing in a scary way). And it does make you think what would happen in a situation like that. Can't wait for 28 months later (god willing it comes out in the next 5 or so years).