GameSpot - I remember when Christmas used to be about train sets, and plump stockings hung over a roaring fireplace, and eating your own body weight in Turkey. These days it's more about shooting people in the face repeatedly--virtually, of course. Come December, nothing will be more coveted than a copy of Call Of Duty: Black Ops II, and a quiet, forgiving family. But just what's in store for you come that wondrous Christmas morning? Here are the top six things you need to know about Call Of Duty Black Ops II multiplayer.