Complete the campaign.

Reach the sniper perch without being detected in Ambush.

Complete Battle of the Bulge.

Successfully escort the pole charge engineer to the pillbox in Hill 493.

Sneak through the Dragon's Teeth undetected in Death Factory.

Complete Liberation.

Sneak through the courtyard undetected in Liberation.

Complete Stronghold.

Complete D-Day.

Complete all Special Operations missions.

Complete the mission in the airplane graveyard.

Take back Whiskey Hotel.