Level Select

Start a new game and enter !EVAH! as a case-sensitive name. 

Invincibility:

Start a new game and enter B4K42 as a case-sensitive name. Pause the game and go to the options screen and you will now find the “God Mode” option.

All Bonuses:

Start a new game and enter 105770Y2 as a case-sensitive name. Note: The code contains the number "zero" and not a capital letter "o". This code will unlock all character biographies, vehicle specifications, FMV sequences, and concept artwork.

Multiple codes:

Start a new game and enter more than just one code to enable several codes at one time. For example, enter B4K42105770Y2 as a case-sensitive name and you will unlock All Bonuses and Invincibility.