Shoot down an enemy helicopter with an RPG in the single player campaign - Call of Duty 4: Modern Warfare
Operate an AC-130 gun ship - Call of Duty 4: Modern Warfare
Kill 5 enemies with one shot while in the AC-130 gunship - Call of Duty 4: Modern Warfare
55/4,78140/1,2504/55
302/5,281180/1,00013/50
747/1,918465/1,00021/43