But I liked Evans and the Korean tweaker engineer. The part where Evans describes what happened in the first few months after they got on the train is the climax of the movie, IMO (as the emotional crescendo, at least), and Evans' performance is as good as anything I've seen in a scene like that.

There were some weird things they didn't explain but needed to and some things they did that didn't make sense, but on the whole, I thought it was great. I definitely wouldn't call it a fancied up B movie. If you think George Miller or Terry Gilliam make fancied-up (or at least artsy) B movies, I could see how you say that, but I don't really classify them that way. Snowpiercer is much, much closer to them than it is to Roger Corman.