When you reach the indicated number of stars in the shop the corresponding cheat option will become available. To turn the cheats on or off select 'Options' at the 'Main' menu. Note: When cheats have been enabled the High Scores and Rewards features will be disabled.
Unlock Easy Mode: Collect 1 Star. ALL civilian traffic is removed.
Unlock Weak Mode: Collect 3 stars. Note: Player can never earn Justice in this mode.
Unlock 'Stay On Target' Mode: Collect 5 stars. When you hit sections of the environment the mission will fail.
Unlock Nitro Mode: Collect 6 stars. ALL player vehicles travel faster.