Beating each level will earn you reward money (and chaining together many limb shots and multiple kills will earn you bonus money). You can spend your cash on unlockable characters, journal entries that offer backstory and character info, or an array of canonical Old West weaponry, including pistols, rifles, and shotguns of many varieties, as well as knives, molotovs, poison, and dynamite.
The game features pistol dueling with certain boss characters, as a mini-game mechanic in which you time your draw to an opportune moment and prepare targets as you raise your gun. There is also a multiplayer game (split-screen only), which you can play with friends and/or AI bots. Multiplayer incorporates a wide array of powerups, an alternative dueling showdown mode, and two kinds of optional poker sub-games that mix some strategy into the action.