CheatCodes.com has all the official One PSX cheats to unlock everything. If you know of any that we don't have, please let us know.
All published and official codes as of Sunday May 19, 2013 for One are shown below.
Level Password 2 DIYGIXRA 3 KCSVJTJB 4 RWLKLPBC 5 YQFZMLTC 6 FLZNOHLD
Enter "THEPRESS" as a password. The text normally displayed when the game is paused will be disabled.
Enter "MAXPOWER" as a password.
Enter "HEVYFEET" as a password.
Enter "HEYBUDDY" as a password. Then options to select a stage, section, invincibility, all weapons, and removing the pause text will appear.
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