Collect all Weapons and Field Upgrades from Supply Boxes in Open Combat Missions - Call of Duty
Find and use all Armaments in Open Combat Missions - Call of Duty
Drive a vehicle with a Sentry Gun on the back and have it kill 5 enemies - Call of Duty
4,479/6,5411,600/2,00052/63
1,799/3,236915/1,45538/57
32/2,57630/1,1503/51