I really enjoyed the first Attack on Titan live feature, which may have not always been faithful but was pretty exciting. The second movie, on the other hand, is a nonsensical piece of tripe with little to recommend it.
There shouldn't actually be two movies. These were filmed at the same time and the second movie is full of flashbacks to the first one, so you could easily tighten these two 90-minute movies into one that was under two and a half hours. Alas, this wasn't done.
This movie makes no real sense from the first scene, in which Eren is tied up in a weird way and a mad commander screams. There's a surprise early on when the movie actually explains how Titans came to be, something the anime series has been dropping hints at for years without giving any real answers (no idea if the movie's answers will be the same in the anime or manga).
Outside of that, the movie is just a fairly incomprehensible story involving a bomb and some big titans that feels disjointed and poorly thought out. Characters do incredibly stupid things (as they did in the first movie) and no one's motivations make any sense. And the big action sequences in the end are less enthralling than the best action of the first movie.
I do enjoy Satomi Ishihara's comical take on Hange Zoe, but the other characters are virtually devoid of personality.
Had the big action scene of the second movie been allowed to build out of the action of the first movie it might have all worked, but the producers clearly wanted to get two movies out of one, with very bad results.
