Serious disappointment

Rating: 1/10 (12 June 2016)

For context, First Class and Days Of Future Past were both 9s or 10s. So, I give this one star with a very heavy heart.
I'm not even sure where to begin, but the biggest flaw by far was the writing. What kills me is these were the same writers that did so well in the previous 2 movies. So many things so far out of character, even given the context the characters were introduced in, then trying to mesh the whole thing together with the most overused Hollywood trope of all time: the emotional appeal.
A movie done right should never make you think "it's just a movie" while you're watching it. That should be an afterthought if they did their job correctly. However, the frivolous manner in which they deal with brutal executions is just jarring. If a character is going to be this brutal, no jokes can be made by such character, nor can any witness act with levity. We see this from Storm when she meets Apocalypse, yet somehow she's magically an X-Men at the end with no reason for her 180. We see even worse from Magneto when he justifiably avenges his daughter (and somehow wife?) but then marches with premeditation to commit an atrocity at the steel plant. Then somehow he 180s because Xavier makes an emotional appeal. All is hunky dory at the end.
To be fair, there were things done right: costumes, music, CGI, and even the actors' performances were solid implementations of horrible writing.
Bottom line, if you're reading a review with spoilers, wait for it to come out on Netflix. Don't waste any dollars in any direct fashion on this film.