I'm not sure as I'm not at home, but I can say that AssCreed Unity takes the top spot (129 hours, which includes Dead Kings but not MP as I don't care for it).
1. Titanfall over 300 hours
2. Killer Instinct over 120 hours or so
3. ShadowFall or Dead Rising 3. Not sure on the hour count for those. But it's one of those 2