Since people are bringing it up, Assassin's Creed. The entire Animus premise is ridiculous, unnecessary, and easily the "modern" parts are the worst part of any of the games. It could have simply been about a family of assassins slaying target after target while marveling at exotic locations with story along the way (which, lets be honest, is exactly what the series is really about) and it would have been infinitely better.
If they were going to go for that, they should've gone all in with it. Have two protagonists, one assassinating people in the ancient eras using ancient methods (poisons, hidden blade, etc.) and one assassinating people in the modern era with modern methods (sniper rifles, bombs, etc.) Make the modern parts not only interesting but equal to the ancient parts. Like a cross between Assassin's Creed and Hitman.