This movie feels much shorter than two hours: it’s fast-paced, intense, and terrifying, with just enough suspense to keep you on the edge of your seat and rooting for the scrappy band of zombie fighters. There’s very little dialogue, and most of the characters are nameless, at least in the subtitles, but they are interesting and likeable. Like every zombie movie, this one is in some ways an answer to Night of the Living Dead: the people fighting the zombies bicker about strategies, seeing your friends and loved ones become zombies is horrifying, and the authorities are as much a danger as the zombies in the battle to restore order. That the mayhem plays out in an orderly and hierarchical culture adds another layer of terror, and the claustrophobic setting in zombie-filled train cars is a different kind of terror than the shambling hordes that overrun the Pennsylvania farmhouse in “Night of the Living Dead.”