Good but Predictable
I enjoyed watching this film, definitely entertaining, but I guessed exactly what would happen far too easily, so it loses points for creativity but it makes up in it's presentation and method of storytelling.
Edit: The above was my initial impression, but today I feel I have to add a nod to the fact of there being no need to suspend disbelief or question anyone's principles at any time, which in a film such as this is a big accomplishment. So the simplicity in the design I initially criticised I feel was kind of a necessity after all.
Though I would have enjoyed it going completely off the rails into absolute insanity, it would have been shock value and it would have detracted from the overall storyline. 8/10