Enter the whatitmeanstome code and activate it between 10 to 20 times so you reach level 50 and gain about $5 million. Go to the 'Character Abilities' screen and buy ALL the fall, fire, bullet, explosion, and vehicle strike damage reduction options until it reaches 'Never take damage'. This will give you complete invincibility from ALL damage. A glitch has been known to occur where you may still die if you are in a normal vehicle and are run over by a tank or if you crash with an aircraft.
Added by: Sanzano Jan 31st 2012, ID#8181