When I think about the worst movies of a given year, I try not to waste too much effort going after, as Bog called it in another thread, the low-hanging fruit. Sometimes I even find things to like in those movies--I don't think I ever mentioned it here, but I found plenty of worthy things in Ben-Hur (with some major caveats, of course). But sometimes the fruit just hangs too low.
I speak, of course, of Assassin's Creed. It's hard to think of a movie that does more to alienate the very people who it's trying to attract. First, some background: In the games, the main character is forced (or asked) to experience the memories of his ancestors (the Assassins) in order to help some corporation find something or other. If I don't have much to say about those scenes, it's because I never pay attention to them when I've played the games. The games are all about the historical settings; they recreate places like 12th-century Palestine, 15th-century Italy/Rome, Revolution-era France, Victorian England, and several other settings, and those (mostly) open-world recreations are extremely vivid and lots of fun. Anyone I know who has played the games plays it for the historical scenes which make up the overwhelming (as in, at least 90%) amount of the game. For some reason, this movie decides to spend most of its runtime in those cut scenes that no one cares about. I think it has three sequences in the historical setting, and even worse: they're the worst things in the movie. Other than a few parts that evoke the graphics of the game, there's nothing at all of worth in them: they're poorly put-together, they're hatefully anti-Christian, and there's no fun in them. So we're left with an incoherent story about, well, I couldn't exactly tell you. I can respect the fact that it's so consciously, and maybe even intentionally weird, but from the final product I can't begin to fathom why this was such a passion project for Fassbender.