The Adventurer
You got all Emblems in the Adventure Field.
20 ✓ October 2nd, 2011
Super Sonic
You cleared all characters stories.
20 ✓ October 2nd, 2011
Sub Game Master
You got all Emblems of the Sub Games.
20 ✓ December 30th, 2011
Miles "Tails" Prower
Tails is your friend now.
10 ✓ December 1st, 2010
Knuckles the Echidna
Knuckles is your friend now.
10 ✓ October 2nd, 2011
Amy Rose
Amy is your friend now.
10 ✓ October 2nd, 2011
E-102 "γ"
E-102 is your friend now.
10 ✓ October 2nd, 2011
Big the Cat
Big is your friend now.
10 ✓ October 2nd, 2011
Sonic the Hedgehog
You cleared the Sonic story.
10 ✓ October 2nd, 2011
The Perfect Adventurer
You got 130 Emblems.
40 
Chao's Best Friend
You got all Emblems of the Chao Race.
20 
The Fastest & Strongest
You got Level A on all the Action Stages.
20 
Mission All Accomplished
You cleared all 60 missions.
20 
Metal Sonic
You can use Metal Sonic now.
15 
Metal Sonic Master
You got Level A on all the Action Stages by using Metal Sonic.
15