6. Rodrigo Borgia - Assassin's Creed 2
My name is Ezio Audtiore de Firenze. You killed my father. Prepare to die. Would that have been stealing from or simply nodding to the Princess Bride? I don't know. What I do know is that this was exactly the kind of level of badassery I expected from Ezio at the final showdown in Assassin's Creed 2 between himself and Rodrigo Borgia, and instead, he simply let the old devil live. Now, there was realistically no way Ubisoft could have killed Borgia without losing their historical accuracy credibility, but that doesn't mean the final battle wasn't deeply anti-climactic. After confronting the Pope in his own Vatican chambers, all that follows is a set-piece-deprived showdown where you use the exact same techniques as you have for every other enemy in the game, by attacking, counter, dodging, then finally ending in a fist-fight. Two pieces of Eden between them, two objects of Godly power, and it comes down to a fist-fight. Wasted opportunity much? And worst of all, Ezio, after years of vowing vengeance, doesn't claim it. Sure, there's a certain sense of satisfaction when you get to butcher Rodrigo's son Cesare in Brotherhood, but that doesn't excuse the anti-climactic nature of AC2 itself.