SONIC ADVENTURE 2 CHEATS

DC

Hidden artwork:
Put the game in a PC CD-ROM drive to find additional images from the game.

Full pause screen:
Pause the game, then press X + Y.

Dark Garden:
Bring up a Dark Chao with one of the three Dark characters. Continuosly feed and train the Dark Chao and it should evolve (creates a tear-shaped "cocoon"). Once it evolves, descending stairs should appear at the main Chao lobby leading to the Dark Garden.

Hero Garden:
Bring up a Hero Chao with one of the three Hero characters. Continuosly feed and train the Hero Chao and it should evolve (creates a tear-shaped "cocoon"). Once it evolves, ascending stairs should appear at the main Chao lobby leading to the Hero Garden.

Kart racing mini-game:
Complete Tails' driving quest in the Hero side story to unlock the kart racing mini-game in the Hero side story. Complete Rouge's chase mission in the Dark side story to unlock the kart racing mini-game in the Dark side story.

Boss attack mode:
Complete the Hero or Dark side story modes to unlock boss attack mode. You will be able to fight the bosses from the side of the story you completed.

Last stage:
Complete the Hero and Dark side story modes. Then, enter story mode and a "Last Stage?" selection will appear on the menu between the Hero and Dark options.
 
Play as Super Sonic and Hyper Shadow
Complete the "Last Stage?" in story mode to unlock Super Sonic and Hyper Shadow.

Bonus stage
To get a 3D version of the Green Hills Zone stage, from Sonic The Hedgehog, you must get all the Emblems, including Kart, Timed Boss, and the emblems for all "A" rating. Once you have them all, which should total 180, the island next to the Green Forest stage will have the face of Sonic on it.

Play as Sonic in alternate costume in kart mode
Complete all of Sonic's stages and missions to unlock him in the PSO suit in Kart mode.

Play as Shadow in alternate costume in kart mode
Complete all of Shadow's stages and missions to unlock him in an alternate costume in kart mode.

Play as Tails in the Tornado 1 in kart mode
Complete all of Tails' stages and missions to unlock him in the Tornado 1 in kart mode.

Play as Eggman in alternate Eggwalker in kart mode
Complete all of Eggman's stages and missions to unlock him in his alternate Eggwalker in kart mode.

Play as Knuckles in alternate form in kart mode
Complete all of Knuckles' stages and missions to unlock him in his alternate form in kart mode.

Play as Rouge in alternate costume in kart mode
Complete all of Rouge's stages and missions to unlock her in an alternate costume in kart mode.

Play as Amy Rose in kart mode
Complete all of Sonic's stages and missions with an "A" ranking to unlock Amy Rose in kart mode.

Play as Metal Sonic in kart mode
Complete all of Shadow's stages and missions with an "A" ranking to unlock Metal Sonic in kart mode.

Play as Tikal The Echinda in kart mode
Complete all of Knuckles' stages and missions with an "A" ranking to unlock Tikal The Echinda in kart mode.