ok i was playing online and i done the play anyone and any mission thing i cant member the type of thing it was like assult ect. but it was like a lake and you had subs, battleship and bomber and a few other things and you had to destroy the other persons heavy guns or somink what mission is it and how do you get it ???

idk which mission but u ge it by playing that game mode a serveral times. (1st unlock: 3 games, 2nd unlock: 4 games (7 games ), 3rd unlock: 5 games (12 games)