This movie is thoroughly unenjoyable, which leads me to believe another cannibal film from this director, titled Long Pig (2008), is much in the same vein.
First things first, none of the characters stand out from each other. Every other girl looks the same, and so when one is killed and captured, you have no idea who exactly it was. Worse, you aren't given a clear picture of the relationship between the characters. I think there were two girls who were supposed to be sisters, but I'll be damned if I can tell you who they were. And related, there's only two names I remember from the movie, and I just finished it ten minutes ago.
Also, this is a dark and dingy film. While likely intentional, the way the film was shot really hindered from both potential enjoyment and potential comprehension. There's one scene with a girl being tortured, while scenes of two girls getting dressed in Halloween costumes are spliced in. I thought that was a flashback, showcasing the tortured girls' memories of a sister/friend she'll never see again, but no, those two getting dressed appear later in the movie. I think. Honestly, it's not clear, and as the movie was atrocious, I don't really care.
Religious ramblings, cannibals, unanswered questions as to who is actually behind the group who goes out to kill "sinners and hippies," this movie is a mess. No amount of nudity can fix this (though, in all fairness, there were some occasionally rather attractive women), and the almost plot-less murder and torture and rape with featureless characters was just awful. In all honesty, I only watched this because there were less than five votes for it on IMDb. I regret that choice, as there's virtually nothing to recommend here.