Headhunter Cheats for PlayStation 2
During Gameplay press and hold R1 + Square and then press 'Start' during gameplay (this only works on the PAL version of the game).
All weapons and infinite ammunition
You need to go to the Star Locker and open it. You can do this by breaking Hank Redwood's records in Leila mode, and completing the game.
However if you use the Star Locker you may not be able to complete the game afterwards
HOLD R1 + Square and press Start while playing the game.
To unlock the room on the second floor of the bikers' hideout, enter "1993" as a password.
Debug Mode- During the game, hold R1 + Square and press START.
Happy gaming =)
Hold R1 and square during gameplay, then press start.
In some levels You do not want to attract attion so choose the Sheild Pellets as a weopon and either throw one or dont but walk up to the enemy and press L1+x and you will break there necks.
But You have to get really close to them.