Bring up the compstat and map screen, hold L1 + R1 and input the following codes:

Double Damage ... CROSS, CROSS, SQUARE, CROSS, CROSS, CROSS
Ammo Unlimited ... CIRCLE, SQUARE, CROSS, SQUARE, SQUARE, TRIANGLE
$1 Million ... SQUARE, SQUARE, TRIANGLE, SQUARE, TRIANGLE, SQUARE
Redman Gone Wild Mini-Game ... TRIANGLE, CROSS, CROSS, CIRCLE, TRIANGLE, SQUARE
Super Easy Difficulty ... CIRCLE, SQUARE, CROSS, CROSS, TRIANGLE, CIRCLE
Super Cop ... TRIANGLE, CROSS, TRIANGLE, CROSS, TRIANGLE, TRIANGLE
Super Viagra (Unlimited Stamina) ... CIRCLE, SQUARE, CROSS, SQUARE, CROSS, CIRCLE

Submitted by 510pimp
Verified by YuGiOhFM2002

You must get Rank 3 Detective.

You must get Rank 5 Detective.

You must get Rank 2 Detective.

At the main menu hold L1 and R1 then enter CIRCLE, TRIANGLE, SQUARE, CROSS, SQUARE, CROSS. Enter the code twice to do "double zombie mode". Undo this code by entering any building. (Unverified)

Bring up the compstat and map screen, hold L1 + R1 and enter CIRCLE, SQUARE, X, SQUARE, X and CIRCLE.

Pick-up all 10 of the Puma shoes that are hidden around the city. Once you accomplish this, you can go to the Puma Shoe store and get the fit.