Collect all Trophies.
Clear GREEN HILL Act 1 within one minute.
Get Rank S in seven Acts.
Get Rank S in twelve Acts.
Get Rank S in all Acts.
Take no damage from the final boss and clear the stage.
Complete all Challenge Acts featuring Sonic's friends.
Find the spring hidden in GREEN HILL Act 1 and reach the goal with a Red Star Ring.
Clear CHEMICAL PLANT Act 2 without entering the water.
Get the Red Star Ring located on the shortcut route in SPEED HIGHWAY Act 2 and reach the goal.
Wreck 30 or more cars in CITY ESCAPE Act 2.
Get the Red Star Ring located in the hidden room in SEASIDE HILL Act 1 and reach the goal.
Get the Red Star Ring by using an Orange Wisp in PLANET WISP Act 2 and reach the goal.
Race through a regular stage as Super Sonic.
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.
Get Rank S in three Acts.
Join the rankings.
Participate in a 30 Second Trial.
Chat with each of Sonic's friends you have saved.
Get Rank S in an Act.
Reach the goal without dropping any of the rings you collected in GREEN HILL Act 1.
Clear Sonic Generations.
Collect all the Chaos Emeralds.
Defeat Egg Dragoon.
Defeat Silver.
Restore the PLANET WISP Stage Gate.
Restore the ROOFTOP RUN Stage Gate.
Get the Red Star Ring atop the highest spot in ROOFTOP RUN Act 2 and reach the goal.
Perform all of Sonic's moves in Act 2.
Restore the CRISIS CITY Stage Gate.
Reach the goal in CRISIS CITY Act 2 without being hit by a tornado-carried cars or rocks.
Defeat Perfect Chaos.
Defeat Shadow.
Pull off a seven or more trick combo or six trick combo ending in a finishing trick.
Restore the SEASIDE HILL Stage Gate.
Restore the CITY ESCAPE Stage Gate.
Restore the SPEED HIGHWAY Stage Gate.
Defeat Death Egg Robot.
Defeat Metal Sonic.
Restore the SKY SANCTUARY Stage Gate.
Clear SKY SANCTUARY Act 1 without falling and losing a life.
Defeat 100 enemies.
Restore the CHEMICAL PLANT Stage Gate.
Restore the GREEN HILL Stage Gate.
Race through the first stage.