We're talking about a low budget film, and it's understandable that there are some weaknesses (no spoilers: one sudden explosives expert and one meaningless alcoholic); but in general the story keeps you interested, most of the characters are likable and there are some original situations.
I really like films that surprise you with some people that are not who they want you to believe and then twist and turn the plot ... I applaud this one on that.
If you know what I mean, try to see also "Nueve Reinas" (Nine Queens) a film from Argentina.