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

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. 

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. 

Codes - Alternate Katarina Costume

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.

Code Effect

1 A male pirate in a purple suit with a big hat (great female voice too)
1000 Black bikini with thigh high black stockings
1010 Brown vinyl bikini top with pants. Conservative
1001 Dominatrix 1 piece; bikini in front, connecting on back. Black leather, with thigh stockings
110 Fuschia bikini with blonde hair
10 Kat in a dark orange bikini
100 Kat in a neon yellow/orange bikini(not bashful at all)
101 Same bikini with blonde hair
11 Same bikini, blue hair-do
111 Silver bikini with blue hair
1011 Silver pant suit with bikini top and purple hair

Game Shark Codes 

Master Code (Must Be On) 0E3C7DF2 1853E59E   EE8EE382 BCD52FD2 
Infinite Health Kat CEBDDADA BCA99B64   CEBDDAE6 BCA99B64 
Infinite Scarecrows CEBDD91A BCA99E6A 
Infinite Magic Harps CEBDD926 BCA99E6A 
Max Hearts Kat CEBDDADE BCA99B8A 
Max Money DEBDD966 C19E7B82 
Max Cannons CEBDD9FA BCA99B88 
Max Cannons Aboard CEBDD96E BCA99B8C 
Harmless Enemies (On Foot) DE994BF6 BF899B8B   DE994BF2 BCA99B83 
Special Attack Full Kat CEBDDAC0 BCA9DA03   CEBDDAC2 BCA99B86 
Scrapbook Complete CEA4BDEE BCA99B4B 
Have Poseidon Figurehead CEBDD922 BCA99B84 
Have Lion Figurehead CEBDD92E BCA99B84 
Have Sea Serpent Figurehead CEBDD92A BCA99B84 
Have Wolf Figurehead CEBDD936 BCA99B84 
Have Ram Figurehead CEBDD932 BCA99B84 
Have Dolphin Figurehead CEBDD93E BCA99B84