Invincibility for Katarina:
Hold R1 + R2 and press X, Circle, L3, Triangle,R3, Select, R3, L1, L2, Square.

Invincibility for the Wind Dancer:
Hold R1 + R2 and press Select, Triangle, L1, X, R3, L2, Square, R3, Circle, L3.

Reveal buried treasure chests:
Hold R1 + R2 and press Circle, X, Square, Triangle, L1, Select, L3, L2, L3, R3. Green Xs will appear on the captain's log maps to indicate the location of buried treasure chests.

Reveal all treasure chests:
Hold R1 + R2 and press R3, X, Triangle, L3, Circle, L1, Select, L3, Square, L2.

All treasure chest keys:
Hold R1 + R2 and press Circle, Select, X, Square, R3, L1, L3, L2, Triangle, L3.

Wind Dancer:
Hold R1 + R2 and press L2, Triangle, R3, L3, X, Square, R3, Select, L1, Circle.

Unlimited items:
Hold R1 + R2 and press Triangle, L1, Select, L2, R3, L3, Square, X, R3, Circle. Once found, an item will be available in unlimited amounts.

Extra gold:
Hold R1 + R2 and press Triangle, R3, L3, X, Square, R3, Select, L1, Circle. Sail to another map to get the Galleon.

Unlimited wind boost:
Hold R1 + R2 and press Select, L1, R3, Circle, L2, Triangle, X, L3.

Advance to Katarina's next sword:
Hold R1 + R2 and press R3, Select, L2, L3, Square, X, L1, Circle, L3, Triangle.

Alternate Glacial Gulf music:
Hold R1 + R2 and press L1, X, Triangle, L2, Square, Circle, L3, Select, R3, L3 to hear music from SSX when sliding down in Glacial Gulf.

High pitched voices:
Hold R1 + R2 and press R3, Circle, Select, X, R3, Triangle, L1, Square, L2, L3.

Kane poison head:
Hold R1 + R2 and press Triangle, L2, L1, Square, L3, X, L3, Circle, R3, Select. The poison status will now be indicated by the head of Kane from Command and Conquer.

Alternate Katarina costumes:
Note: The following code requires two players and controllers. Simultaneously hold L1 + L2 + Up + Select + L3 on controller one and R1 + R2 + Triangle + Start + R3 on controller two. A short sequence of music will confirm correct code entry. Press R3 on controller one to change the value of the numbers that appear on screen, then start a new game or resume a saved game to view the corresponding costume. The costumes that can be accessed are:

Original costume and hair color: 0000:0000
Blackbeard in purple: 0000:0001
Red hair with red and orange bikini: 0000:0010
Blue hair with orange and red bikini: 0000:0011
Tan, brown hair, orange and yellow bikini: 0000:0100
Blonde hair, orange and yellow bikini: 0000:0101
Blonde hair, pink bikini: 0000:0110
Blue hair, shiny silver bikini: 0000:0111
Red hair, black bikini, black stockings: 0000:1000
Pink hair, shiny black body suit: 0000:1001
Blue hair, shiny copper body suit: 0000:1010
Purple hair, shiny silver body suit : 0000:1011

Hint: Valkyrie cheer:
Save the game, then intentionally allow the Valkyrie to kill Katarina without the Valkyrie getting any damage during the battle.