Enter "2Eprunef", "6aPHuswe", "96CesuHu", "Cr34ufrE", "JeM8SpaW", "sa7eSUPR", 
"SpujeN7x", "tar3QuzU", "THaCupR4", "tr99pUkA", or "zUmU6Rup" as a 
case-sensitive code to unlock the "The Georgian", "The Bolivian", "Special 
Delivery", and "Le Français" missions. If you entered the correctly, the 
message "You have successfully unlocked the missions" will appear. Start a new 
game or continue a saved game. Pause the game, and display the "Map Legend" 
menu. You will see a new envelop legend labeled "Special Mission". 
Successfully complete the tutorial and a few missions. You will 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.