Activate the following cheats by getting the corresponding numbers of stars in the shop. At the main menu, select "Options" > "Cheats" selection to turn the cheats on or off. Enabling cheats will disable high scores and rewards:
CHEAT FUNCTION - CHEAT CODE Easy Mode - One star. In this mode, all civilian traffic is removed. Nitro - Six stars. In this mode, all player vehicles travel faster. Stay On Target - Five stars. In this mode, hitting sections of the environment will cause the mission to fail. Weak - Three stars. In this mode, the player can never earn justice.