Unlock the following bonuses by performing the corresponding tasks:
BONUS - HOW TO UNLOCK Amy - Talk to her in the Casino as Sonic after finishing Sky Chase. Big - Defeat Chaos 6 as Sonic. E-102 Gamma - Defeat Gamma after finishing Sky Deck as Sonic or Tails. Alternately, finish Twinkle Park as Amy and watch the FMAs after it. Knuckles - Defeat him after finishing Ice cap as Sonic or Tails. Miles Tails Prower - Finish the C mission of Emerald Coast action stage as Sonic. Play Emerald Course in chao race - Beat the rest of the four courses. Super Sonic - Succesfully complete the game as Sonic, Tails, Knuckles, Amy, Big and E-102 Gamma. Super Sonic will be avaliable only in Adventure Mode.