I'm usually a completionist, but as hard as I try some of these optional missions are downright impossible. Even reloading checkpoints six or seven times, I can't seem to do them, which is sending me into a rage. So, I can only do two or three missions at a time before I turn the game off, in fear of breaking a $60 controller. And I'm a guy who LOVES the Assassin's Creed series (even the first one). But, I've decided this is my last one. They've sucked the fun out of the series. Right now I'm plowing through so I can see the damn ending and get it over with.