Various cheats
     Start  a  game and press START during gameplay, then hold down L2
while entering all codes.

3rd Person:
     Square, O, Square, O, L3, L3, Triangle, X, Triangle, X, R3, R3

Big Head:
     O, Square, X, Triangle, L3, Triangle, X, Square, O, R3

One Hit Kills:
     L3, R3, L3, R3, X, O, L3, R3, L3, R3 Square, Triangle

Super Ragdoll:
     X, X, O, O, Square, Square, Triangle, Triangle, X, O, Square, 
Triangle


Text for Axe Easter Eggs
     On  the Fremont Street level there is a bottle of Axe on a ledge.
Shoot  the  bottle  and  the  roof  on  Fremont  Street  changes to an
animation  of  a  girl  in a bikini with some Axe materials in neon. A
movie  opens  up  showing  some  outtakes  and  pretty  funny  Rainbow
situations/early animations.

Hint - Unlocking Weapons (Campaign)
     After  destroying the opposition in single player campaign, don't
forget  to  pick-up  each  new weapon you come across. While you don't
have  to  keep  a  weapon  and  finish  a  map  to  unlock  it in your
customization  menu,  you  do  need  to  hold  onto it briefly or your
profile will not save it.

     Another  advantage is once you "claim" the weapon, you can die or
restart  the mission entirely and use it in the stage you got it from.
This  way,  all the enemies you drop pretty much restock that weapon's
ammo  and  you  literally  will  be  carrying  a  portable  ammo  dump
throughout that stage.

     Note: you need to reload your profile's last checkpoint each time
you boot the game to get your gear back. If you choose to load a stage
without  loading  your last checkpoint, your previously earned weapons
will be lost.