Enter these codes anytime while playing in history mode or free roaming mode with the directional buttons an d the others buttons of the psp,by introducing these combinations in the game, the game disables the save option and can not save. All you can do after introducing them and then want to save is: leave the game itself and re-enter the game to enable the option of save.

Code	Effect
Down,Down,Left,Right,Left,Right,Up,Up,R.X	Gawd Mode off.
Left,Left,Right,Right,Up,Down,Up,Down,X,O	Unlock all styles.
Left,Left,Up,Down,Right,Right,Up,Down,R,X	Super stomp.
Left,Right,Left,Right,Up,Up,Down,Down,R,O	Big Money.
Right,Right,Up,Down,Left,Left,Up,Down,R,X	Speed shoes.
Triangle,Triangle,X,Triangle,Triangle,X,Triangle,Triangle,X,O,O	Unlock all the stages.
Up,Up,Down,Down,Left,Right,Left,Right,X,O	Unlock all weapons.
Up,Up,Down,Down,R,O,R,O,X	Lose the cops.
Up,Up,Left,Right,Left,RIght,Down,Down,R,X	Gawd Mode On.
X,O,X,Triangle,X,O,O	Red sweat,This enable somenthing in the npc like blood.
up,up,up,left,right,R,O,R,O,R	Unlock all the characters.