Yu Yu Hakusho: Dark Tournament cheats and cheat codes for Playstation 2

Go to the options screen and choose the "Cheats" option, after enter the 
following cheats:

Unlock Unlimited spirit energy for player 1:
Press Square, X, Circle, Square, X, Circle

Unlock Unlimited spirit energy for player 2:
Press Down, Up, Circle, Left, X, Right

Player 1 invulnerable:
Press Circle, Square, Down, Left, Circle, Square

Player 2 invulnerable:
Press Up, Square, Left, Square, Circle, Square

Unlock all characters and different outfits:
Press Square, Up, Square, Circle, Down, Circle

Unlock all environments:
Press Up, Right, Left, Right, X, X

Unlock all cards:
Press Circle, Square, Circle, Square, Square, Down

Unlock all modes:
Press Left, Right, Down, Right, X, Circle

Unlock Turbo mode:
Press Circle, X, Right, X, Up, Square

Unlock every stages:
Press Up, Down, X, Circle, Square, Right

Complete the following Dark Torunament episodes to unlock arenas, 
tokens and alternate outfits:

Unlock Elder Toguro's other outfit: Beat Younger Toguro in DT mode episode 2
Unlock Survival mode and Ogre Special Token: Finish DT episode 6
Unlock Tag Team mode and Captain Special Token: Finish DT episode 7
Unlock Cliff arena: Finish DT episode 13
Unlock Gatasubal Special Token: Finish DT Plus episode 15
Unlock Gambler Special Token: Finish DT Plus episode 18
Unlock Yukina Special Token: Finish DT Plus episode 19
Unlock Cave arena: Finish DT episode 21
Unlock Dark arena: Finish DT episode 22
Unlock Yoko Kurama Special Token: Finish DT Plus episode 23
Unlock Play as Jin: Beat Jin with a "Perfect" in DT episode 23 
Unlock Spirit Egg Special Token: Finish DT Plus episode 26
Unlock Crashed arena: Finish DT episode 30
Unlock DT Pro mode and Sakyo Special Token: Finish DT Plus episode 30
Unlock Younger Toguro: Finish DT episode 31
Unlock Touya: Finish DT mode in easy mode