This is one of those movies that requires rapt attention to the screen and the ability to "just get into it" and accept it for what it is. After about 20 minutes it grew on me. You need to try to put yourself in their position, not just watch it as an observer.
Yes, it could have been done better or differently, and could have covered a lot more psychological ground, but it worked for me in its own context. The director had a consistent vision, even if some viewers will never get it.
The attitudes of some external characters seemed oddly upbeat and that wasn't explained, but maybe that's how it would be for some. The casters may have studied people in the real world who knew they were going to die, so the world essentially ends for them anyhow. That may be worse than knowing everyone else is coming with you. There are endless psychological angles to this plot.
The vague technical explanation for the world's condition reminded me of "The Road" but little else about it resembled that film. I thought the acting was plenty good and the sparseness of characters and dialog (except for numerous Skype scenes) fit the mood that was created.
Just give a try and don't watch it with shallow, loudmouth people interrupting (I can't see it doing well in a typical theater setting). You may find it quite compelling and it could make you appreciate life more. That's the main effect it had on me.
