"Phobia 2" is an anthology of Thai horror films made by some of Thailand's top film directors. As previous reviewers have mentioned, it's difficult to rate anthology films because they may vary wildly in quality.
"NOVICE" (by the director of "Body") is the weakest of the bunch. A delinquent teenager is dropped off at a jungle monastery by his mother who promises to pick him up "when things calm down". "Novice" has some very good ideas but ends up depending too much on loud noises and jump scares while also being somewhat dull. Great ending, weak film. 6/10 "WARD" (the directorial debut of a Thai producer) finds a teenager placed in a hospital bed next to an old man on life support after a routine bicycle accident. Strange things begin happening and the film achieves a claustrophobic "Rear Window" feel since the strong-willed teen can't movie his legs. Good but predictable. 7/10 "BACKPACKERS" (by the director of "Dorm") was my favorite. When it starts off with two silly Japanese teenagers hitchhiking in Thailand, you wonder why it's a horror movie. That's answered soon enough. Thrilling, spooky, gory and exciting. Sadly, this director has turned more to teen comedies lately. 10/10 "SALVAGE" (by the co-director of "Shutter" and "Alone") features another story about karmic justice as a woman who sells used cars gets a comeuppance that would never happen in an American movie. Also takes a while to get going, but ends up worth the time. 7/10 "IN THE END" (by the OTHER co-director of "Shutter" and "Alone", as well as "Pee Mak") is delightfully silly and a great way to end the series. You'll have to know a little bit about Thai horror (think "Scream"), acting and Thai sense of humor, so this might be the most difficult for Western audiences. Still enjoyable with a creepy ending....9/10