Defeat 100 enemies.
Race through the first stage.
Collect all Trophies.
Clear Sonic Generations.
Clear GREEN HILL Act 1 within one minute.
Get Rank S in an Act.
Get Rank S in three Acts.
Get Rank S in seven Acts.
Get Rank S in twelve Acts.
Get Rank S in all Acts.
Pull off a seven or more trick combo or six trick combo ending in a finishing trick.
Reach the goal without dropping any of the rings you collected in GREEN HILL Act 1.
Perform all of Sonic's moves in Act 2.
Complete all Challenge Acts featuring Sonic's friends.
Chat with each of Sonic's friends you have saved.
Join the rankings.
Participate in a 30 Second Trial.
Get all Skills.
Get all collectibles.
Play Ranking Attack on all stages.
Get all Red Star Rings.
Clear half the Challenge Acts.
Clear all the Challenge Acts.
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