As I'm writing this, Camino has a score of 4.8, which is an excessively low score. I've actually noticed a trend on IMDb where a lot of films are given extremely poor ratings when they're just not that bad and Camino is definitely one of these films. It's unfortunate because I know some people will watch or not watch a film based on the IMDb score, which means a lot of good or decent movies are probably being missed out on.
A lot of other reviewers are complaining of bad acting, but I can only assume they are exaggerating or just haven't watched a wide range of films. The acting is not "bad" - it's not necessarily award-winning stuff, but it's certainly not bad. Usually, if I'm watching a film with bad acting, I find it difficult to get into as I can't become absorbed in it and am constantly aware that I'm watching (bad) actors, but that never happened once to me while watching Camino. I think Zoe Bell is actually very impressive for a stunt-woman-turned- actress.
Also, do not skip the first ten minutes of the film as another reviewer said, it is relevant to the film and what happens during the first ten minutes helps to make sense of another scene that happens around midway through the film.
The only thing I would criticize is that Zoe Bell's character seems a little too skilled in combat for a photojournalist going up against militia members who've presumably had experience in guerilla warfare. It's saved, though, by the fact that most of the fighting lacks any crazy martial arts moves on Zoe Bell's part and instead sticks to dirty, survival style fighting, maintaining an element of realism.
Overall, I think this movie is pretty solid and I've definitely seen a lot worse.