The good: It really sounds and looks the part. This director knows how to evoke emotions with images and sound only. That is really kinda special, because not many directors are capable of painting a mood without any dialogue.
More good: this is a really bleak and depressing story. And at the start I was really into this world of doom.
The bad: what is lacking though are (more) credible characters who actually interact with each other, like real humans would do. Even a bleak "end of the world" movie needs credible characters. Just showing a world of doom and murder aint enough to keep me hooked...
EVERY character is a stereotype and some of these characters dont come across as believable at all, which destroys the movie magic and the suspense for me personally.
Especially the "bad guy" is rather laughable in his acting manners, which is such a shame. There is NO real suspense or thrill to speak of, when I think the "bad guy" looks and acts silly...
This movie only has got one gear, which unfortunately got stuck in gimmickry of doom and gloom.