See that up there ^ where it's got the date and then some ill thought out pun. it should say "Game Complete". You see aside from Dear Esther, which I didn't think merited it, I put that whenever I complete a game.
I haven't completed Assassin's Creed 2, do you know why, because it's fucking endless. I can't really go in to details without spoiling something, but you get what looks like an end game, only to lose it and have to free an entire city, and I assume many more things.
Don't get me wrong, I still like Assassin's Creed II, but sometimes less is more