you have to get an "S" rank on all town missions.
I hate to say it, but SEGA didn't put in a free mode in Sonic the Hedgehog
In Sonic the Hedgehog(2006), You can just play as him in multiplayer mode or complete certain levels in campain mode.
What do you mean by "free", and be more specific about the game.
Yes. In Sonic Adventure 2 (Battle), only in Dark Mode and Last Story. Also in Sonic Battle, Sonic Heroes, Shadow the Hedgehog, Sonic the Hedgehog (2006), Sonic Riders, Sonic Riders: Zero Gravity, Sonic Free Rider, Sonic and the Secret Rings, Sonic and the Black Knight, Sonic Chronicles: The Dark Brotherhood, Sonic Rivals, Sonic Rivals 2, Sega Superstars, Sega Superstars Tennis, Sonic & Sega All-Stars Racing, Sonic & All-Stars Racing Transformed.
he is in a mission mode in sonic rush
Yes you can. But... you'll need Debug Mode or Level Select. The only Cheats i know.
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you have to beat the game in all story modes and beat the extra boss
You have to complete silver's,sonic's and shadow's story to unlock the last story. When you finally meet up with Solaris, you go SUPER SONIC ! And if you get all S,s on all the missions, then you get free mode where you can play as any character and play them on any level.
Hyper Sonic and Super Tails are only availbale in Sonic 3 and Knuckles if you gather all chaos emeralds the super emeralds.
I'm afraid there has been no hearing of Sonic Heroes 2. But he will show up in multiplayer mode in Sonic and the Black Knight if you play it.
All you need to do is get the Debug mode code and the Super Sonic code off of Tcrf.com