King of Fighters 2006 cheats and cheat codes for Playstation 2

Sound test with 52 tracks:
Finis level 60 in Quest Survival mode

Unlock extra levels:
Finish the following task:
Level 1: Finish the Story mode.
Level 2: Finish the first 50 Easy missions.
Level 3: Finish the last 50 Easy missions.
Level 4: Finish the first 50 Hard missions.
Level 5: Finish the last 50 Hard missions.
Level 6: Finish the level 60 in Survival mode.
Level 7: Finish the level 120 in Survival mode.
Level 8: Finish the level 180 in Survival mode. 

Unlock characters:
Finish the game with a different characters

A. Ralf: Finish the game with 11 characters.
B. Jenet: Finish the game with 5 characters.
Fio: Finish the game with 3 characters.
H. Hattori: Finish the game with 4 characters.
Hyena: Finish the game with 13 characters.
Jivatma: Finish the game with 14 characters.
Kim K.: Finish the game with any character.
Kyo K.: Finish the game with 9 characters.
Lilly K.: Finish the game with 8 characters.
Mr. Karate: Finish the game with 12 characters.
Nightmare G.: Finish the game with 6 characters.
Ninon B.: Finish the game with 7 characters.
Richard M.: Finish the game with 2 characters.
Wild Wold: Finish the game with 10 characters.