Complete the campaign on any difficulty.

Find the Soviet connection in Laos.

Silently take out 3 VC.

Escape Kowloon.

Rack up a body count of 20 NVA using air support in Hue City.

Break the siege in the battle of Khe Sanh.

Receive orders from Lancer.

Destroy all enemies on vehicles during the prison break.

Use a riot shield to beat down an enemy in Single Player or Special Ops.

Complete the mission in the airplane graveyard.

Take back Whiskey Hotel.

Storm the gulag.