Achievements
Complete each achievement to get the allotted gamerscore
Avoid losing momentum
Jumping and switching weapons while in midair is a good way to help keep your current speed and momentum This helps a lot if you find yourself being chased by someone in a multiplayer game and are low or out of ammunition for your current weapon
Bonus Cash code
From the Main menu go into Exclusive content and enter Enter code
Very Hard Mode
Beat single player mode on any difficulty setting
