Defeat the boss of Carson City.
Defeat the boss of Desolation Canyon.
Defeat the boss in the Ammunition Depot.
Defeat the boss in the Gold Mine.
Defeat the boss on the Armored Train.
Defeat the boss of the Underground.
Defeat the boss of the Flying Ship.
Beat Single Player on Easy without using any continues.
Beat Single Player on Easy with all characters without using any continues.
Beat Single Player on Normal without using any continues.
Beat Single Player on Normal with all characters without using any continues.
Beat Single Player on Hard without using any continues.
Beat Single Player on Hard with all characters without using any continues.
Unlock all colors for Clint.
Unlock all colors for Doris.
Unlock all colors for Bullet.
