Bon Clay
Complete event battle with Chopper to unlock Bon Clay.

Enel
After completing event battle with Luffy, Zoro, Nami, Usopp, Sanji, Chopper, and Robin, complete their move list in training mode. A picture should flash by of Enel challenging you. Now, play a regular tournament at Grand Tours (tournament mode). One of the character will be replaced with Enel. Defeat and win the tournament.

Smoker
Complete event battle with Luffy to unlock Smoker.

Unlock Shanks
Unlock Ace, complete Event Battle under the hard difficulty setting as Luffy, Zorro, Nami, Usopp, Sanji, Chopper and Robin, and unlock the Windmill Village and Marine HQ stages. Now, successfully complete Event Battle as Luffy under the hard difficulty setting.

Buggy
Complete event battle with Zoro to unlock Buggy.

Aokiji
Complete event battle with Luffy, Zoro, Nami, Usopp, Sanji, Chopper, Robin, Buggy, Kuro, Krieg, Arlong, Smoker, Bon Clay, Crocodile, and Foxy. Now, play event battle again with Luffy. In the final stage you will battle Aokiji. To unlock Aokiji, you must use your level 2 special.

Alternate title screen
Unlock all the characters to get a new Title Screen that features everyone.

Marine HQ stage
After unlocking everyone, successfully complete their move lists in training mode. After doing so, destroy all the pillars in the stage. Do this with every character to unlock the stage.

Crocodile
Complete event battle with Robin to unlock Crocodile.

Kuro
Complete event battle with Usopp to unlock Kuro.

Alternate costumes/outfits
Complete the following goals to unlock the listed costume/outfit for the listed character.

Arlong
Complete event battle with Nami to unlock Arlong.

Mihawk
Complete event battle with Zoro on the very hard difficulty setting after Shanks has been unlocked. Defeat Mihawk with a level 2 special after getting hit with Mihawk's level 2 special to unlock him.

Foxy
Complete event battle with Chopper twice to unlock Foxy.

Very hard mode
Complete event battle on the hard difficulty setting with more than 10 characters to unlock the very hard difficulty setting.

Davy Back Fight mini-game unlockables
Win the Davy Back Fight min-game the listed amount of times to unlock the listed bonus:





Groggy Ring: 4 times


Donut Race: 10 times


Crash Rush Boxer (the box breaking): 18 times


Snow (getting rid of snow): 26 times


Breaking Krieg's Armor: 29 times


Sanji & Zoro voice (announcing): 33 times; also need all support character voices unlocked


The "Fix" sign: 34 times

Krieg
Complete event battle with Sanji to unlock Krieg.

Maxim stage
Complete event battle with Enel to unlock the Maxim stage.

Shanks
Complete event battle with Luffy on the very hard difficulty setting after unlocking Aokiji and Enel to unlock Shanks.

Unlock Bon Clay
Unlock Hina, then successfully complete Event Battle as Sanji under the hard difficulty setting.

Alternate costumes/outfitsfor The Straw Hats
After unlocking Shanks and Mihawk, successfully complete the entire move set for all The Straw Hat Pirates in training mode to unlock a 3rd costume/outfit for them inspired by the Color Walk books.

Unlock Ace
Unlock Bon Clay and the 3rd costumes/outfitsfor Luffy, Zorro, Nami, Usopp, Sanji, Chopper and Robin (by completing training mode with them), then successfully complete Event Battle as Smoker under the hard difficulty setting.

PS2 Cheats for One Piece: Grand Battle! Rush

One Piece: Grand Battle! Rush cheat codes

One Piece: Grand Battle! Rush cheats