DICE has put a little something extra into the new Battlefield: Bad Company 2 Vietnam add-on, but you’ll only be able to get it if everyone else wants it as much as you. The “Operations Hastings” map, which has been revived from the classic Battlefield: Vietnam from 2004, is hidden in the new DLC pack, but won’t be available until 69 million online “team actions” are recorded. That’s a lot of actions… …