TURISTAS might have an promising premise, but the execution is so lightweight that it's actually more of a dramatic thriller than a horror movie. There's nothing scary going on, just a bunch of annoying douchers being chased around by a non-scary looking dude and his boring helpers...and that's only during the final act of the movie! The first hour of the film is nonstop talking and walking and boozing and swimming and more talking.
I didn't hate the film. I just found the entire thing extremely boring. Skip it with a vengeance and never look back. You will gain absolutely nothing by watching this by-the-numbers snoozer.
Wow. A long, drawn out, poorly lit underwater swimming chase/fight scene. How exciting!