Invincibility:
Press White, L, Black, R, A during game play. A message will confirm correct code entry.

Unlimited time in Kaos mode:
Press White, L, Black, R, B during game play. A message will confirm correct code entry.

Unlimited ammunition:
Press White, L, Black, R, Y during game play. A message will confirm correct code entry. You cannot be holding a weapon for this to work.

All weapons:
Press White(2), R(2), A during game play. A message will confirm correct code entry.

Pistol:
Press Left, Right, Down, White, Y during game play. A message will confirm correct code entry.

Tazer:
Press Left, Right, Down, White, B during game play. A message will confirm correct code entry.

Pepper Spray:
Press Left, Right, Down, White, X during game play. A message will confirm correct code entry.

Tear Gas:
Press Left, Right, Down, White, A during game play. A message will confirm correct code entry.

Shotgun:
Press Left, Right, Down, L, Y during game play. A message will confirm correct code entry.

Minigun:
Press Left, Right, Down, Black, Y during game play. A message will confirm correct code entry.

Flame Thrower:
Press Left, Right, Down, Black, B during game play. A message will confirm correct code entry.

Grenade Launcher:
Press Left, Right, Down, Black, X during game play. A message will confirm correct code entry.

Rocket Launcher:
Press Left, Right, Down, Black, A during game play. A message will confirm correct code entry.

AK47:
Press Left, Right, Down, R, Y during game play. A message will confirm correct code entry.

M16:
Press Left, Right, Down, R, B during game play. A message will confirm correct code entry.

Grenade:
Press Left, Right, Down, R, X during game play. A message will confirm correct code entry.

Molotov Cocktail:
Press Left, Right, Down, R, A during game play. A message will confirm correct code entry.

Mission skip:
Press Left(4), Y during game play. A message will confirm correct code entry.

Mission select:
Press White, L(3), White, A during game play. A message will confirm correct code entry.

Punches decapitate:
Press White, L, Black, R, X during game play. A message will confirm correct code entry.

Little player:
Press Black, R, White, L, A during game play. A message will confirm correct code entry.

Big player:
Press Black, R, White, L, Y during game play. A message will confirm correct code entry.

Normal player:
Press Black, R, White, L, B during game play. No confirmation message will appear. Alternately, press Black, R, White, L, X during game play.

Looting on the rise:
Press Black, White, R, L, Y during game play. A message will confirm correct code entry.

Bull:
Press Right(4), A during game play in Kaos mode. A message will confirm correct code entry. Alternately, successfully complete the East Side level in Revolution mode to unlock Bull in Kaos mode.

Freak:
Press Right(4), B during game play in Kaos mode. A message will confirm correct code entry. Alternately, successfully complete the Chinatown level in Revolution mode to unlock Freak in Kaos mode.

Spanky:
Press Right(4), Y during game play in Kaos mode. A message will confirm correct code entry. Alternately, successfully complete the Mall level in Revolution mode to unlock Spanky in Kaos mode.

Chinatown level:
Score 25,000 points in the Capitol City Mall level in Kaos mode.

East Side level:
Score 50,000 points in the Chinatown level in Kaos mode.

Corporation Central level:
Score 100,000 points in the East Side level in Kaos mode.

Last Clone Standing levels:
Successfully complete the three minute and five minute versions of a level to unlock the Last Clone Standing version of that map in Kaos mode.

Hint: Recover from burning:
When on fire, enable any weapon code to get up .

Hint: Use head as a weapon:
Use a shotgun and shoot someone. A part of their body will fall off and you can pick it up.

Hint: Destroying buildings:
Use any and all explosives to your advantage. Rocket launchers, grenade launchers, and even molotov cocktails can be used to blow up buildings. When throwing an item into a building, face a window directly and it will go right in. Destroying buildings is where the big money is at.

Hint: Disable bombers:
To disable bombers, set them on fire with the flamethrower. They will die without exploding.

Hint: Easy power-ups:
Find an area in any level where you can run back and forth reasonably far and has weapons power-ups on either side. Draw a large crowd of enemies between this area and simply proceed to run back and forth. When you are ready to let loose, turn around and begin to strafe. Run to the other side as you pick up all the diseased ones' health and time bonuses. When you reach the other side, take your new weapon and start again.

Hint: Defeating ATO guards:
While in Revolution mode, drop your weapon before moving past an ATO guard. They will ignore you if you are not causing problems and have no weapon. You can usually find another weapon replacement later.