Various cheats

Official Cheat Codes
     Select "Settings" option at the main menu. After that, select the
"Cheat Codes" option. Enter any of the following codes:

Cheat code:             Result:
IMALAZYBEEOTCH          Unlocked Single Player
F3ARM3                  God Mode
ALLAMO                  All Ammo
MYLOCATION              Location Stat
P33kaB00                Skip Cinematics
EBpwnz                  EBGames Bonus Content
BESTBUYpwnsYou          Best Buy Bonus Content
GameStopPwnage          GameStop Bonus Content
TRUPwned                Toy's R Us Bonus Content
FuturePwnage            Future Shop Bonus Content
PwnageMart              Wal-Mart Bonus Content
YouGotGroove            Groove Bonus Content
TargetingYou            Target Bonus Content
ShhItsaSecret           Secret Bonus Content

Other Cheat Codes
     While  playing,  press  [`]  (tilde)  and  then  type  any of the
following codes.

Cheat code:             Result:
god                     God Mode
fly                     Fly Mode
walk                    Walk Mode
allweapons              All Weapons
ghost                   No Clipping
allammo                 Full Ammo
invisible 1/0           Invisibility On/Off
killall                 Kill All Enemies