Initially, it felt like a huge "World War Z" ripoff. On how the zombies act, it is a ripoff of World War Z. Where I thought this film excelled, pretty much everywhere else. Direction, plot, acting, they were all above average to good. It did knock it out of the ballpark in one area & that's this concept with the train ride. It's a zombie survival on a frigging train!
I think my only gripe was how on a one key death, it took like five minutes for the character to turn into a zombie, when everybody else turned quickly. In these zombie flicks, you have to set the rules, then follow them. Also, no guns in this movie(not really). ;)