They present you with one of the most vile characters I have ever seen on screen, we are talking of a whole new level of evil and greed here, real departure of humane.
They make you sit there and go through the movie with the impression that this character could get away with it and that there actually is something morally admirable about her (determination); said impression is not enjoyable and leaves you with a sensation of utter injustice.
From just a little past the middle onwards I just could not wait for the moment in which she gets what she deserves, and that is medieval-style torture.
Also the fact that Russian mafia cannot land a hit on two normal persons is very inverosimile, let alone these persons winning over a mafia that handles mules by the hundreds.
Not a good movie at all, not even slightly entertaining.