This film is a tremendous combination of themes, genres and cinematic techniques to make an exceptionably enjoyable journey.
The plot is very clever, the characters are rich and diverse, giving the film a lot of personality and differentiating it from a lot of more mainstream films out there.
I'm not sure what made me enjoy this film SO much, I think it was the combination of the fantasy plot (which was made to seem totally plausible and convincing through consistent brilliant acting) with some truly stunning bouts of action. It's honestly quite difficult to put into words.
Another plus are the twists and revelations that are uncovered as we follow the story. I really enjoy films which reward you for watching, as new fragments of information are released it drags you deeper into the action and you can't wait for the next one. The cliffhanger ending is a brilliant incentive to watch Vol. 2 as well!
Let's just say I've watched it at least 10 times and I'm certain there's many more to come.