Buy 5 items in the Black Market.
Collect 1500 gold medals.
Collect 2000 gold medals.
Kill 6000 enemies.
Kill 7000 enemies.
Clear Arcade mode on Normal difficulty
Collect 1000 gold medals.
Clear the Desert in Arcade mode on any difficulty.
Kill 5000 enemies.
Score 1,000,000 points in Arcade Mode with any car.
Clear the Mountains in Arcade mode on any difficulty.
Beat any boss without taking any damage.
Kill 1000 enemies.
Clear the Railway in Arcade mode on any difficulty.
Collect 100 gold medals.
Clear the Wasteland in Arcade mode on any difficulty.
Build up the score multiplier to x9.