Select "Profile" from the main menu, then choose "Name" and enter any of the following names to active the corresponding cheat:
quivira - Accelerated firing
campbell - Increased ammuntion capacity
barton - Infinite ammunition in Story Mode
hunter - Unlocks all chapters in quick play mode
nedwhite - Unlocks all weapons in Story Mode (expect Final Weapon)
allies - Unlocks Jenny as a Playable Character
Defeat Magruder to unlock the Cannon Nock Gun and the Seven Barrel Nock Gun.
These skins are unlocked by beating the high scores on each of the Quick Play challenge games.
Dodge Whore - Score exactly 10 points on Fire Fight
Hollister Thug 1 - Score 150 or more points on Quail Hunt
Hollister Thug 2 - Score 100 or more points on Hold The Fort
Port - Score 100 or more points on Suppress The Outlaws
Red Hand Thug - Score 40 or more points on Bear Hunt
Rude - Score 50 or more points on Hollister's Dynamite Run
Enter BADLANDS as a profile name to unlock a bonus deathmatch level.
These are the scores needed to unlock the next challenge in the Quick Play section.
Bear Hunt - Score 60 or more points on Suppress The Outlaws
Fire Fight - Score 35 or more points on Bear Hunt
Hold The Fort - Score 125 or more points on Quail Hunt
Hollister's Dynamite Run - Score 7 or more points on Fire Fight
Suppress The Outlaws - Score 75 or more points on Hold The Fort