Wow, this was a good movie.
Action is key in a movie of this type, obviously, and this one delivered in spades. The martial arts had great impact. The stunts looked awesome. Things broke the way they were supposed to and it was no surprise to hear that months went into the choreography. Awesome gore peppered the movie and only showed up when it mattered.
Amazing cinematography and great choices elevated the whole thing. Shaky cam highlighted the action scenes, without being overused. In fact, it was executed nearly perfectly and only enhanced the movie with its use. With the rest of the shots being beautifully framed shots and slow zooms, it made the actions shots pop without jarring.