Two player Special Stage mode:
Get 40 emblems in single player story or challenge mode.
Two player Team Battle mode:
Get 20 emblems in either single player story or challenge mode.
Two player Ring Race mode:
Get 60 emblems in single player story or challenge mode.
Two player Bobsled Race mode:
Get 80 emblems in single player story or challenge mode.
Two player Quick Race mode:
Get 100 emblems in single player story or challenge mode.
Two player Expert Race mode:
Get 120 emblems in single player story or challenge mode.
Metallic Team Sonic characters in two player modes:
Select a two player mode. Hold A + Y when making a choice at the character selection screen. Keep the buttons held through the level selection screen and release them when game play begins.
Metallic characters in single player mode:
Get 141 emblems in single player story or challenge mode.
We Can song:
Beat story mode as Team Sonic.
Follow Me song:
Beat story mode as Team Rose.
Team Chaotix song:
Beat story mode as Team Chaotix.
This Machine song:
Beat story mode as Team Dark.
Team FMV sequences:
Beat story mode as a Team to unlock their FMV sequence in the CG Theater.
Super Hard difficulty setting:
Beat the game with all "A" ranks and 141 emblems.