Successfully complete Story mode to unlock Magruder's Seven Barrel Nock gun.
Successfully complete Story mode and all side missions (100% completion) to unlock Reed's armored horse and Magruder's Cannon Nock gun.
.69 Ferguson Rifle
Defeat Hollister to unlock the .69 Ferguson Rifle.
Successfully complete the Hunting missions to unlock the Apache Shirt.
Defeat Reed to unlock the Dual Peacemakers.
Successfully complete the Pony Express missions to unlock the Silver Spurs.
Easy Poker Game Wins
When playing Texas Hold 'em inside the Alhambra, you can easily win with or without a good hand. Raise the bid to the maximum.
This should make at least one to three players fold. You can then cheat to make your hand better, and if the cheat card is a worse card, just go back to your original hand. Afterwards, keep checking your hands until one of you wins.
It should be you most of the time. Do not worry if you lose, as the tournaments are free.
Cheats, codes and hints for GUN on the Xbox submitted by Wilber Sr.
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