Just watch Community instead.
The action was definitely kicked up a notch from the 1st one both in terms of frequency and choreography. It was pretty satisfying. There is also much more character stuff, a lot of which is also quite satisfying, but some of which got away from Whedon and co. just a little bit (Hulk in particular).
So how could it go wrong? It doesn't. Not exactly.
Age of Ultron could never hope to replicate the feel-good vibe of the plot of…