Select "Additional Content" at the main menu, then select "Promotion Code". Enter one of the following codes to activate the corresponding cheat function.
Unlock Extra Missions
Enter one of the following case-sensitive codes. A message will confirm correct code entry. "The Georgian", "The Bolivian", "Special Delivery" and "Le Français" missions are now unlocked. The message "You have successfully unlocked the missions" will appear to confirm correct code entry. Start or continue the game. Pause game play and display the "Map Legend" menu. You will see a new envelope legend labeled "Special Mission". Complete the tutorial and few missions. You eventually get a phone call from a distorted voice that sends you on your "predecessor's tracks". Go to the envelop map legend location to find an old bus that is now a shack and continue.