There's really nothing new here in this metal-stuffed, angsty demon-comedy, but for the most part, it's really well done. It's a lot like Scout's Guide to the Zombie Apocalypse only with more likable characters, a lot more heavy metal, and a sicker sense of humor. Like a lot of these sorts of comedies that seem directed at 18-year-old boys, this one loves its penis jokes. You also probably wouldn't want to be snacking during this because there's quite a bit of gore. Intestines, decapitation, eyeless demons, etc.