Yeah it does show a familiarity with the slasher genre, particularly the backwoods variety (and in particular it has moments that recall The Burning). And it does have blood. But this is definitely a comedy before horror, not a horror film with some jokes. It's one of those things with a great idea at the center that they could have easily botched but didn't.
I'd say it's better than Zombieland, Army of Darkness or Shaun of the Dead, but I am fully aware of my opinion being in the minority on those films.