Enter the following during the middle of gameplay:

TRIANGLE, X, SQUARE, CIRCLE, CIRCLE, UP - shotgun

TRIANGLE, X, SQUARE, CIRCLE, CIRCLE, LEFT - invisibility

TRIANGLE, X, SQUARE, CIRCLE, CIRCLE, RIGHT - slow motion

TRIANGLE, X, SQUARE, CIRCLE, CIRCLE, DOWN - fast motion

TRIANGLE, X, SQUARE, CIRCLE, X, UP - change spawn point

TRIANGLE, X, SQUARE, CIRCLE, X, RIGHT - infinite ammo

TRIANGLE, X, SQUARE, CIRCLE, X, DOWN - max charisma

TRIANGLE, X, SQUARE, CIRCLE, X, LEFT - nail gun

TRIANGLE, X, SQUARE, CIRCLE, TRIANGLE, UP - sub machine gun

TRIANGLE, X, SQUARE, CIRCLE, TRIANGLE, RIGHT - sniper rifle

TRIANGLE, X, SQUARE, CIRCLE, TRIANGLE, LEFT - rocket launcher

TRIANGLE, X, SQUARE, CIRCLE, TRIANGLE, DOWN - heavy machine gun

TRIANGLE, X, SQUARE, CIRCLE, SQUARE, UP - ragdolls