The pace mirrored the first one, with the first hour building the story and the second being full blown mother fucking action, but just didn't have the same feel to it. I really liked Hawkeye's "what the fuck am I doing here!? I have a bow and arrow!" humor. But I didn't get how Thor knew that tony was right the second time. Dude just appeared out of nowhere to mjolnir the visions stasis thingy and bring him to life.
I think that's the biggest problem. Tony's solution to building a sentient robot that decides to exterminate mankind is to build another sentient robot. And Banner's ok with that. Plus, let's put an Infinity Gem in this one.
