After destroying the fuel depot at the start of the game and returning to the 
Belle De Nuit, drop off Luc. Do not enter the Belle De Nuit. Instead, unlock all 
three Mayhem perks to unlock machine guns on the Aurora race car. An easy way to 
unlock the last Mayhem perk is to find an open tank, hijack it, and destroy any 
Nazi vehicles that appear. Note: An open tank can be found in the ruins of a 
building a few meters behind the church that is on top of the hill. The church 
is located behind the Belle De Nuit. Then, go to "The Race" where Sean must race 
against Dierker in Saarbrucken. During the race, do not pass Dierker, but get 
close enough to him to shoot his car with the machine guns on the Aurora. Keep 
shooting Dierker's car until it becomes damaged and the game credits appear, 
indicating you have finished the game by killing Dierker. You can either watch 
the credits or skip them. After the credits, you will get "The Legend Begins" 
trophy, and a "Mission Failed" screen will appear, allowing you to retry the 
mission.