Sonic Adventure 2: Battle

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.

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.

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.

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.

In the Hero Side story, complete the Tails driving quest and in Dark Side story, successfully finish the Rouge chase mission.

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.

Complete "Last Stage?" in story mode.

Other Cheats