Original URL: http://www.psxextreme.com/ps3-cheat-print/15.html
Sonic The Hedgehog

Unlock the following characters for Free Mode:

Amy Rose
All "S" Ranks on Soleanna mystery missions.

Blaze
Pass all Soleanna mystery missions.

E-123 Omega
All "S" Ranks on GUN Commander missions.

Knuckles
All "S" Ranks on Town Stage missions.

Tails
Pass all Town Stage missions.

Rouge
Pass all GUN Commander missions.

Audio and Theater Rooms
Completing any episode unlocks the

Final Episode
Completing the 3 Epidsode's (Sonic's, Silver's, and Shadow,s) will unlock the final episode

Silver's Episode
Beating Silver unlocks his episode

Shadow's Episode
Completing "Crisis City" unlocks Shadow's Episode.