The Newest Game Cheats

Activate developers code by going to the keyboard options and clicking advance. Then when in game press the ~ button.
sv_cheats 1 - Activates cheats 
God -   God mode 
noclip -   fly 
notarget  -  Enemies dont target you 

Press [~] and enter one of these codes:
cmdlist  - List of Commands 
UnlockAllMaps -   Unlock all maps in campaign mode 
CameraFreedom -   Free camera 
WinGame  -  Win current mission 

Unlimited Talents
When gaining a level, meditate and set your talent points as usual. After meditation, revisit your talent screen and right-click all of the talents you just learned. This will cause a ringing sound, but cause no visual change. You can now meditate again and have all of the talents again.

GOD - God Mode (invincible) 
LOADED -   All Weapons and Full Ammo 
STAT FPS -   Shows Framerate 
Allammo -   Max Ammo. 
Behindview 1 -   3rd person camera. 
Behindview 0 -   1st person camera. 
Ghost -   Enables movement through walls, flight. 
Playersonly -   Disables AI movement. 
Slomo X -   Speed of the game, where “X” represents a numerical value. 
Walk -   Makes the player Walk, […]

Start or resume a career. From the career menu, select CODE ENTRY.
Then select SECRET CODE and type any of the following cheat codes.
Some codes may only be used once per career.
SAFETYNET -  5 Free Repair Markers 
CASHMONEY -  Add $10,000 
HORSEPOWER -  Unlock Chevrolet Chevelle SS 
UNLOCKALLTHINGS -  Unlock All Bonuses 
COLLECTORSED& -  Free Collector’s Edition Upgrade 
ITSABOUTYOU -  Unlock […]

** DEMO VERSION **
Hit the tilde key (~) to use the console.
Type seta thereisacow “1337″ and then press ENTER.
Type spdevmap bog_a and then press ENTER.
This will start the demo with cheats enabled.
While playing, drop down the console and enter the
following codes and hit ENTER to activate or toggle them.
** COMPLETE VERSION **
Same as above but […]

Hide Weapon, Show Coordinates & Camera Modes
This cheat only works during a local match or replay. You must press and hold the following buttons for 3 SECONDS to toggle the effect on / off.
KEYS:
LB = Left Bumper
RB = Right Bumper
LS = Click in on Left Analog Stick
RS = Click in on Right Alalog Stick
CODES:
LB + […]