Psychonauts
While playing the game, hold L1 + R1 and quickly press Circle(2), Triangle, R2, L3, Triangle. If you entered the code correctly, the phrase "You cheated" will be spoken.
While playing the game, hold L1 + R1 and quickly press L3, R3, L3, R2, Circle, R2. If you entered the code correctly, the phrase "You cheated" will be spoken.
While playing the game, hold L1 + R1 and quickly press Circle(2), Triangle, R2, L3, Triangle. If you entered the code correctly, the phrase "You cheated" will be spoken.
While playing the game, hold L1 + R1 and quickly press R3, Circle, R2(2), L3, Triangle. If you entered the code correctly, the phrase "You cheated" will be spoken. Note: This does not unlock the Psi-ball Colorizer or Dream Fluffs.
While playing the game, hold L1 + R1 and quickly press Circle, R2, Circle(2), Triangle, L2. If you entered the code correctly, the phrase "You cheated" will be spoken.
While playing the game, hold L1 + R1 and quickly press L3, R2(2), Circle, X, R3. If you entered the code correctly, the phrase "You cheated" will be spoken.
While playing the game, hold L1 + R1 and quickly press R3, X, L3(2), Triangle, Circle. If you entered the code correctly, the phrase "You cheated" will be spoken.
While playing the game, hold L1 + R1 and quickly press X, R3(2), R2, Triangle, X. If you entered the code correctly, the phrase "You cheated" will be spoken.
While playing the game, hold L1 + R1 and quickly press R2, X, L3, R2(2), Circle. If you entered the code correctly, the phrase "You cheated" will be spoken. This code replaces the characters' names with developer names, shows captions for all the dialogue, and changes the text to numbers and symbols.
Reach Psi Cadet rank 100 by collecting all Psi-Orbs, Psi-Cards, Cobwebs, Figments, Emotional Baggage, and scavenger hunt items to unlock a bonus movie.
Have three Psi powers equipped, none of them being Levitation. Then, double-jump, hold L1 to glide, then press X while gliding to grab the Levitation Ball. This will work just as if you are using it normally. Note: You must have completed "Milla's Dance Party" in order for this trick to work.
To defeat Jasper in Gloria's theater, use Pyrokinesis, Levitation, and whatever else desired. Use the Levitation Ball to float up the top where the lights are located. Jump and use the Levitation Float above the music note to get there. Use Pyrokinesis to light the candles and make Jasper dizzy. Go down and punch him until he is no longer dizzy. Repeat this to defeat him.
To defeat the Lungfish in the first and second stages, whenever he blows out the yellow boxes, hit the one he starts to suck in. When in the final stage, stand by a clam. When he starts swinging the thing on his head, punch the clam shell, then punch him.