Played Time Attack on all stages.
Took no damage while defeating the final boss.
Got all custom skills.
Got all collectibles.
Cleared a regular stage as Super Sonic.
Got all Red Star Rings.
Cleared Sonic Generations.
Collected all the Chaos Emeralds.
Defeated Egg Dragoon.
Completed all of Sonic's friends' Challenges.
Defeated Silver.
Got Rank S in all acts.
Chatted with all of Sonic's friends you saved.
Got Rank S in acts 12 times.
Reached the goal in CRISIS CITY without being hit by a tornado-carried car.
Restored the CRISIS CITY Stage Gate.
Cleared all the missions.
Participated in a 30 Second Trial.
Restored the PLANET WISP Stage Gate.
Got the Red Star Ring by using an Orange Wisp in PLANET WISP.
Got the Red Star Ring atop the highest spot in ROOFTOP RUN.
Restored the ROOFTOP RUN Stage Gate.
Cleared half the missions.
Defeated Perfect Chaos.
Defeated Shadow.
Joined the rankings.
Restored the SEASIDE HILL Stage Gate.
Performed all of Sonic's actions in Act 2.
Cleared Green Hill within one minute.
Got the Red Star Ring located in the hidden room in SEASIDE HILL.
Restored the CITY ESCAPE Stage Gate.
Wrecked 30 or more cars in CITY ESCAPE.
Got the Red Star Ring located on the shortcut route in SPEED HIGHWAY.
Restored the SPEED HIGHWAY Stage Gate.
Got Rank S in acts seven times.
Cleared CHEMICAL PLANT without entering the water.
Reached the goal without dropping any of the rings you collected in GREEN HILL Act 1.
Found the spring hidden in GREEN HILL Act 1 and reached the goal with a Red Star Ring.
Defeated Metal Sonic.
Defeated Death Egg Robot.
Restored the SKY SANCTUARY Stage Gate.
Cleared SKY SANCTUARY without falling even once.
Restored the CHEMICAL PLANT Stage Gate.
Executed a trick with a seven-step combo or longer.
Defeated 100 enemies.
Got Rank S in acts three times.
Restored the GREEH HILL stage Gate.
Completed the first stage.
Got Rank S in an act.
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