The trailer to the film looked amazing, but now - having watched it - I have mixed feelings. Part of me blames the fact that I generally don't like crime/mafia movies.
Firstly, lets talk about the look of the film. Wow, incredible! The film has stunning visuals and photography and amazingly beautiful - almost breathtaking - slow motion capture. The action sequences are fast-paced, rather brutal, and incredibly well done. The film's first half is filled with action galore that should satisfy even the most discerning action fanatic.
However, the film then refrains from action for a while and the story becomes complicated. There are also way to many characters just for the kill (like a John Woo film!), and the lack for human life is distasteful.
The ending is not what you'd expect - or hope for - but I suppose it's better than having a predictable ending. The film in general was hit and miss for me. The action scenes certainly are fantastic, as well as the cinematography. As mentioned, though, I'm not a big fan of the crime genre, which possibly influenced my impression of the movie.