I was really looking forward to seeing this movie after enjoying the direction the X-Men films took following X-Men: The Last Stand, which I didn’t think was very good. While I'm a fan of comics, I never really got into the X-Men, so I can overlook some of the things that seemed to bother dedicated fans. I just wanted to enjoy the movies themselves. X-Men: Apocalypse is the least impressive entry since films like Last Stand and Wolverine Origins. It didn’t have much going for it. One common criticism of Marvel (even though I realize the X-Men movies aren't made by Marvel Studios, I'm talking about the company that publishes the original comics) is that their villains often fall flat. Magneto has been the most entertaining and captivating villain in the franchise so far. We’ve had encounters with Stryker and Trask and his Sentinels, but this is the first time the X-Men have faced a true supervillain who wasn't Magneto—aside from Wolverine versus The Silver Samurai. It felt like director Bryan Singer created an impossible situation for himself with Apocalypse. The villain was so powerful that he could have easily achieved his goals without needing help from his "four horsemen." He had the ability to end the world in just a few minutes, all on his own. But, naturally, that would have made for a dull movie, so Singer and the team needed to figure out what to do with the most powerful and dangerous mutant around for two hours before the final battle could begin. There were scenes where the villains were literally sitting around in the desert discussing their plans to destroy a city on the horizon. There were also scenes where the strongest of these villains was recruiting less formidable ones to join him. Really, Singer just seemed unsure how to handle this character. How do you build conflict and tension when the antagonist is simply too powerful? The answer is, you can’t. After nearly two hours of watching the most powerful mutant ever talk about what he was going to do (instead of actually doing it), he finally unleashed his power. But then it turns out that the X-Men have a mutant with incredible abilities on their side in Jean Grey. So, again, why wasn’t Jean destroying Apocalypse within the first ten minutes? Because they needed to pad out the running time. That's essentially what this movie is: filler. They came up with an idea that would make the story difficult to manage. Instead of adjusting the concept or developing the plot with additional storylines, they just assumed explosions and superhero fights would be enough to carry the film.

Source on TMDB