Infiltrate the snowy mountain side base. - Call of Duty: Modern Warfare 2 (2009)
Knife an enemy without him ever knowing you were there in Single Player or Special Ops. - Call of Duty: Modern Warfare 2 (2009)
Kill 2 enemies with a single bullet in Single Player or Special Ops. - Call of Duty: Modern Warfare 2 (2009)
113/1,519110/1,0009/50
15/3,10615/1,2501/47
47/4,78140/1,2503/55