I'm reviewing this because no-one else has. The IMDb score is currently 3.6 which sounds horrendous – but it's not that bad. The acting is pretty decent and the sparse dialogue, seen as subtitles in my case, is fine. There's a rather dull opening few minutes which doesn't establish much we subsequently need to know or care about, but once the action starts it doesn't let up until the movie ends. Best of all, though this is fairly stock horror fodder, something about it feels slightly different and fresh – maybe just because it's Chilean.
What's not so good? Well it is stock horror and there's no real story. A bunch of people run into some psychos and get brutalised – that's pretty well it. There is some kind of sub-plot going on, but I never really understood it, nor the ending come to that. If you like this type of horror, relying on nasty sadism with people trying to survive and escape, rather than jump-out scares or explicit gore and splatter (the special effects aren't great – it's quite low-budget) then you may find this quite entertaining. The worst thing is that bane of the horror genre – people keep doing stupid things for no reason. Example: some good guys get the drop on some bad guys and make them drop their guns. They then run away without taking the guns, leaving the bad guys to pick them up, kill more people and chase them with them. This kind of thing happens over and over but I guess horror-fans can't be too bothered by it as it's the same in most movies in the genre.