Sonic Adventure 2: Battle Game Cheats ( Game Cube )
Unlock Boss Attack Mode
Complete either Hero or Dark side story modes. You'll be able to fight each boss from either Hero or Dark side.
Unlock Chao Dark Garden
Raise a Dark Chao with one of the three Dark characters. Continually feed and train your Dark Chao and it should evolve. Once it evolves, descending stairs will appear at the main Chao lobby that lead to the Dark Garden.
Unlock Chao Hero Garden
You must raise a Hero Chao with one of the three Hero characters. Continually feed and train your Hero Chao and it should evolve. Once it evolves, ascending stairs will appear at the main Chao lobby that lead to the Hero Garden.
Unlock Green Hill Stage
To unlock a 3D version of the Green Hill stage (from Sonic the Hedgehog on the Sega Genesis), earn all 180 emblems. The new stage will appear on the world map.
Unlock Kart Racing game
In the Hero Side story, complete the Tails driving quest and in Dark Side story, successfully finish the Rouge chase mission.
Unlock Last Stage
Finish both Hero and Dark side story games. Once done, go into story mode and a "Last Stage?" menu selection should appear between Hero and Dark selections.
