Complete the following tasks to unlock the corresponding playable character in Versus mode.
Beat ALL of Tails' levels with an 'A' rank.
Beat ALL of Sonic's levels with an 'A' rank.
Get A ranks on ALL of Eggman's stage.
Beat ALL of Rouge's levels with an 'A' rank.
Beat ALL of Shadow's levels with an 'A' rank.
Beat ALL of Knuckles' levels with an 'A' rank.
Alternate Sonic in Kart Mode:
When you complete ALL of Sonic's stages and missions you will unlock him in the PSO suit in Kart mode.
Unlock Last Stage:
When you manage to successfully complete the Hero and Dark side story modes and then enter Story mode a 'Last Stage?' option will appear on the menu between the Hero and Dark selections.
Unlock Green Hill Zone:
When you have collected 180 emblems and got an A-Rank on ALL of them you will be able to play the 3D version of Green Hill Zone.
Complete the following tasks to earn the corresponding Avatar Award.
2G Vintage Sonic Tee:
Play the game for 5 hours in any game mode.
Sonic's 2G Hi-Speed Shoes:
Play the game for 10 hours in any game mode.
Unlock Multiplayer Characters:
Collect ALL 180 Emblems to unlock the following hidden Multiplayer characters: