From the onset of civilization, the immortal apocalypse is been referenced out of fear as he begins to recruit other mutants in a ploy to extinct mankind.
Bryan Singer has managed to pump out what is probably the best X-Men film after First Class. He really does demonstrate what a difference a director can make to a mega-film such as this.
It's basically a closing chapter to a feeble trilogy that started out pretty well and then ran out of gas, and now must serve as a prequel to shadowy X-related endeavors yet to come.