Original URL: http://www.psxextreme.com/ps2-cheat-print/447.html
The Warriors

Cheat Codes:

The following codes should be inputted while you are "in-game"
Infinite health

Up, Triangle, L3, Select, X, L2, Down, Square, Left, X, L1, Select.

Unlimited sprint
Down, Square, Left, X, L1, Select.

Infinite rage
Square, Circle, Triangle, Select, X, Left.

Weapon Set 1
Up, Down, Up, Up, Triangle, R1, Square

Weapon Set 2
Up, Up, Up, down, Square, Square, Triangle, Circle

200 Bones, 3 Flash, and Cans
R1, R2, L1, X, Down, L1

Complete current mission
Down, Square, X, Select, R1, Left

100% completion
L1, Select, Square, Down, L2, Right.

Lose police
Up, Select, X, Triangle, Triangle, Square

Get knife
Down, Down, Select, Up, Up, L3 (that's pushing the left analog stick in, by the way)

Get bat
Square, R2, Down, Down L1, L1

Get pipe
R2, Circle, Select, Up, L1, Right.

Get machete
L1, X, R1, R1 Select, R2.

Hint:

Easy Money
After a mission in Free Roam mode break into a jewelry store and take the cash register. Go towards your base, and then go up the first set of stairs and stop. Turn towards the stairs leading farther Up. While in this position, throw the register against the stairs until it breaks and then collect the money. If you do this right, you can do it until you get $999.