Another comic book-based movie. It absolutely wallows in its absurd premises, but still winds up killing a lot of people along the way. Fine. The MPAA rates it R, for the usual reasons: "sequences of strong violence, drug content, language throughout and some sexual material". But no female nudity, sadly. It's like that's the new taboo.
It is a sequel. The survivors from the first movie are back (however some of them only briefly). And one of the non-survivors is back too: Colin Firth, who Samuel L. Jackson shot in the head. That sort of thing is recoverable in this universe.
There's a new group of baddies, led by Julianne Moore, who seems to be having fun. She runs a massive drug cartel, and has a scheme to go legit by poisoning all the users of her products, withholding the antidote until and unless the War on Drugs is called off. Unfortunately, the President of the US, Captain Pike, thinks getting rid of all the druggies would be just great! So, no help there.
And the Kingsmen Brits ally with their American counterparts.
Bottom line: to really like this movie, you have to really like tongue-in-cheek carnage, accompanied by bad language. I liked it a little better than the first one, but I might just have been in a more receptive mood.