Note: These only work in Single player mode.

Low Gravity: Hit start then d-pad up, right, right, up, up, left.

Toggle Autoaim: Hit start then d-pad down, down, down, down, up, up.

Big Heads: Hit start then d-pad up, up, left, right, up, down.

Max out Cash: Hit start then d-pad up, up, down, down, left, right.

IFF Glow: Hit start then d-pad right, right, right, up, down, left.