A little bit of a spoiler alert here: this time the dog does not die. Other than that, “John Wick Chapter 2” is pretty much what you saw in the first “John Wick.” Once again, this is a movie about a good guy who happens to be an assassin, going after the bad guy assassins, in an assassin demimondaine with cool details but mostly a lot of assassining. Director Chad Stahelski, a martial arts instructor turned stuntman in films like “The Crow” and “The Matrix” makes these films from a stuntman perspective. The intricately choreographed stunts are shot like a Fred Astaire dance number. That means the camera sits relatively still and lets the action tell the story rather than tricking it all up with quick cuts and fancy angles. And the stunt settings are imaginative, including ancient Roman catacombs and an art installation that is like a super-sized funhouse mirror display.