Hunter: The Reckoning Cheats for GameCube

LEFT,LEFT,L,R,A,A

Enter the following codes during gameplay to unlock the corresponding effect. When entering the code the directional buttons are pressed on the D-pad and not on the analog stick.
Unlock Unlimited Ammo:
Left, Left, R, L, A, A .
Unlock Best Version of ALL Weapons:
Left, Left, R, R, B, B .

Get All Weapons
During game-play press the following combination to get all weapons:
Up, Down, X, Y, Y.
Nightmare mode:
To unlock the Nightmare Mode option at the Special Features screen
successfully complete the game.
Alternate Ending Sequence:
To unlock the good ending save at least 50 innocents before returning to the
train.

While playing press up, down, x, y, y, do this before picking up any special weapons.