Psychonauts Cheats - PlayStation 2

All Psi powers
Hold [L1] + [R1] and quickly press [Circle]x2, [Triangle], [R2], [L3], [Triangle] during game play. The phrase "You cheated" will be spoken to confirm correct code entry.

Maximum rank and all Psi powers
Hold [L1] + [R1] and quickly press [L3], [R3], [L3], [R2], [Circle], [R2] during game play. The phrase "You cheated" will be spoken to confirm correct code entry.

Full ammunition
Hold [L1] + [R1] and quickly press [R3], [X], [L3]x2, [Triangle], [Circle] during game play. The phrase "You cheated" will be spoken to confirm correct code entry.

Full arrowheads
Hold [L1] + [R1] and quickly press [X], [R3]x2, [R2], [Triangle], [Square] during game play. The phrase "You cheated" will be spoken to confirm correct code entry.

Full lives
Hold [L1] + [R1] and quickly press [L3], [R2]x2, [Circle], [X], [R3] during game play. The phrase "You cheated" will be spoken to confirm correct code entry.

Invincibility
Hold [L1] + [R1] and quickly press [Circle], [R2], [Circle]x2, [Triangle], [L2] during game play. The phrase "You cheated" will be spoken to confirm correct code entry.

All items
Hold [L1] + [R1] and quickly press [R3], [Circle], [R2]x2, [L3], [Triangle] during game play. The phrase "You cheated" will be spoken to confirm correct code entry. Note: This does not unlock the Psi-ball Colorizer or Dream Fluffs.

New text
Hold [L1] + [R1] and quickly press [R2], [X], [L3], [R2]x2, [Circle] during game play. The phrase "You cheated" will be spoken to confirm correct code entry. This code replaces the characters names with developer names, shows captions for all the dialogue, and changes the text to numbers and symbols.

Defeating the Lungfish
To defeat the Lungfish for the first and second stages, whenever he blows out the yellow boxes hit the one that he starts to suck in. To win in the final stage, stand by a clam. When he starts swinging the thing on his head, punch the clam shell, then punch him.

Unlock Raz's psychic powers
Clairvoyance - Go open the fridge in Boid's mind
Confusion - You can find it in Bullfighters home in Edgar's mind
Invisibility - Go and see Ford after you have ranked up enough
Levitation - Complete Milla's dance party
Marksmanship - Destroy the Mega Censor in Sasha's mind
Pyrokinesis - See Ford after you have ranked up enough
Shield - Release the lungfish from prison over in lungfishopolis
Telekinesis - Go and see Ford once you have ranked up enough

Making Of Reels
Sort all emotional baggages in any mind to unlock the character of the brain's 'making of' reel.

Bonus Movie
In order to reach rank 100 you will need to collect all scavenger hunt items, psi-orbs, psi-cards, cobwebs, figments and emotional baggage.

Game developer easter egg
When inside Linda's head, go to the end part where the skyscrapers are. Go to the last one on the far left and climb up it until your right above the fifth row of windows. Force the camera to the right until the mountain is in the way. There is a picture of a girl there. The girl is the girlfriend of one of the games developers.

Secret Message
After achieving the highest rank possible (i.e. after getting EVERYTHING), in The Collective Unconscious, there'll now be a line of text flying around saying, "All levels 100% completed, congratulations Psychomaster!"