Completion bonuses:
Unlock the following bonuses by performing the corresponding tasks:
BONUS – HOW TO UNLOCK
Last Episode – Complete sonic’s episode, shadow’s episode, and silver’s episode.
Shadow the Hedgehog – Complete ‘crisis city’ with sonic.
Silver the Hedgehog – Complete ‘silver the hedgehog’ boss battle with sonic.
Theater and Audio Room – Complete sonic, shadow, or silver’s story 100%.
Free mode:
To unlock Free mode, get an “S” rank on all of Sonic, Shadow, and Silver’s levels, bosses, and town missions.
Free mode characters:
Unlock the following Free mode characters by performing the corresponding tasks:
CHARACTER – HOW TO UNLOCK
Amy Rose – Complete all soleanna mystery missions with an “S” rank.
Blaze the Cat – Complete all soleanna mystery missions.
E-123 Omega – Complete all GUN commander missions with an “S” rank.
Knuckles the Echidna – Complete all town stage missions with an “S” rank.
Miles “Tails” Prower – Complete all town stage missions.
Rouge the Bat – Complete all GUN commander missions.
Audio Room music:
Unlock the listed theme song in the Audio Room by completing the corresponding episodes with a 100% rank:
THEME SONG – HOW TO UNLOCK
Elise’s Theme – Complete “the last episode”.
Shadow’s Theme (All Hail Shadow) – Complete “shadow’s episode”.
Silver’s Theme (Dreams of An Absolution) – Complete “silver’s episode”.
Sonic’s Theme (His World) – Complete “sonic’s episode”.
Get shoes from shoemaker:
After the the video clip of the Princess of Soleanna, go through the town square towards the store, and you will see an old man with a mark on his head. Talk to him so that you can test out some new shoes he just made. He will let you keep them.
Fast Sonic:
In multi-player mode with Sonic, equip the red gem. Activate it and then die while continuing to hold the activation button until you respawn. After you respawn, deactivate it. You will now run a lot faster and time will slow down.
Gem functions:
The following gems have the corresponding functions:
GEM – FUNCTION
Dark Blue – Speed.
Red – Slow down time.
Green – Make a tornado.
Purple – Shrink yourself and multi-jump.
Light Blue – Mega jump.
White – Control the direction of your homing attack.
Yellow – Attract rings.