Original URL: http://www.psxextreme.com/ps2-cheat-print/397.html
Psychonauts

Cheat: All Powers:
 CIRCLE, CIRCLE, TRIANGLE, R2, L3, TRIANGLE
Cheat: All Powers Upgraded:
 L3, R3, L3, R2, CIRCLE, R2
Cheat: 9999 Ammo

 R3, X, L3, L3, TRIANGLE, CIRCLE
Cheat: 9999 Arrowheads:
 X, R3, R3, R2, TRIANGLE, SQUARE
Cheat: 9999 Lives:
 L3, R2, R2, CIRCLE, X, R3
Cheat: Global Items:
 R3, CIRCLE, R2, R2, L3, TRIANGLE