Kill a Juggernaut in Special Ops.

Earn all 3 stars in at least 10 different Special Op missions.

Kill 20 enemies in a row while driving a vehicle in Single Player or Special Ops.

Kill 10 enemies in a row using akimbo weapons in Single Player or Special Ops.

Kill 2 rappelling enemies in a row before they land on their feet in Single Player or Special Ops.

Complete the game on any difficulty level.

Obtain Skynet security codes from a fallen HK Tank.

Destroy the Infiltrator.

Destroy the T-47 that occupies Pasadena.

Take at least a 'good' photo of an enemy.

Destroy a T-800 Flamethrower by shooting it's fuel tank.

Successfully hack 10 devices.