You can enter the following codes in the Cheats Menu under "Options." Enter the entire phrase given below to activate the cheat, punctuation included. Capitalization does not matter. Once a cheat is entered you may toggle them from a master list. If the cheat effect isn’t made obvious by its title, we give a description of it in parenthesis below. Entering cheats disables saving and Trophies / Achievements!
Invincibility - HE GIVES STRENGTH TO THE WEAK
Infinite Dead Eye - I DON’T UNDERSTAND IMNFINITY
Infinite Horse Stamina - MAKE HAY WHILE THE SUN SHINES
Infinite Ammo - ABUNDANCE IS EVERYWHERE
Money ($500) - THE ROOT OF ALL EVIL, WE THANK YOU!
Horse - BEASTS AND MAN TOGETHER
Diplomatic Immunity (Marshalls ignore crime) - I WISH I WORKED FOR UNCLE SAM
Decrease Bounty - THEY SELL SOULS CHEAP HERE
Gun Set 1 - IT’S MY CONSTITUTIONAL RIGHT
Gun Set 2 - I’M AN AMERICAN. I NEED GUNS
Who? (Turn into a Nobody) - HUMILITY BEFORE THE LORD
Old School (Sepia Filter) - THE OLD WAYS IS THE BEST WAYS
Sharp Dressed Man (Unlock Gentleman’s Suit) - DON’T YOU LOOK FINE AND DANDY
Lewis and Clark (Unlock all areas) - YOU GOT YOURSELF A FINE PAIR OF EYES
Jack Attack (Change John into Jack) - OH MY SON, MY BLESSED SON
Donkey Rider - ???
Coach - ???
Increase Bounty - ???
Clear Bounty - ???
Every Shot Counts - ???
Gun Set 3 - ???
Gun set 4 - ???
Punchout - ???
Famous - ???
Good Guy - ???
Bad guy - ???
So So Guy - ???
Change Weather - ???
Beastmaster - ???
Hitchcock - ???
Guns Blazing - ???
Hic - ???
Man In Uniform - ???
Gang Chic - ???
Right To Bear Arms - ???
Rise Up - ???
Dead-eye Level 1 - ???
Dead-eye Level 2 - ???
Dead-eye Level 3 - ???