Quick Battle mode:
——————
Win the Pro AM Class in the World Racing League to unlock Quick Battle mode.
Quick Stunts mode:
——————
Win the World Racing League on the Easy difficulty to unlock Quick Stunts mode.
Time Attack mode:
—————–
Win the Pro Class in the World Racing League to unlock Time Attack mode.
Pro Class:
———-
Win the World Racing League on the Easy difficulty to unlock the Pro Class.
Mach 6:
——-
Win the World Racing League on the Easy difficulty to unlock the Mach 6.