At the main menu hold L1 + R1, then press down, circle, up, square, down, down, up followed by up. Then let go of L1 and R1. Select cheat at the main menu. Now enter one of the codes below.
KKst0ry - All Levels (note this is a zero, not a capital letter O) KK 999 mun - 999 Ammunition KKmuseum - Bonus Complete 8wonder - God Mode KKcapone - Machine Gun KKtigun - Revolver KKsn1per - Sniper Rifle lance 1nf - Infinite Spears GrosBras - One Hit Kills KKsh0tgun - Shotgun (written with a zero, not the letter O)
