Start the Single Player Campaign on any difficulty.

Renovate 5 buildings in the Antico district.

Complete DNA Sequence 4.

Recruit 3 Assassins.

Achieve 100% Synchronization in any Sequence other than Sequence 1.

Access the terminal and battle the forces of the Cosmic Silverback in Dead Ops Arcade.

Demonstrate killer economic sensibilities by taking down 3 enemies with a single bullet.

Complete the campaign on any difficulty.

Find the Soviet connection in Laos.

Silently take out 3 VC.

Escape Kowloon.

Break the siege in the battle of Khe Sanh.