Clear Splash Hill Zone Act 1.
Acquire a Chaos Emerald.
Enemy Hunter
10Defeat 1,000 enemies.
Golden Flash
10Clear all Acts as Super Sonic.
Defeat the final boss and view the ending.
Contender
10Upload your recorded clear times for all Time Attack stages.
Collect all the Rings in 'Special Stage 1' and Clear the stage.
Immortal
20Build up 99 or more extra lives.
Acquire all seven Chaos Emeralds.
Clear Splash Hill Zone Act 1 in less than a minute.
Untouchable
30Clear the E.G.G. Station Zone without taking any damage.
Get 120 rings in Mad Gear Zone Act 1.
Finish all 3 Acts and boss round of Splash Hill Zone
Finish all 3 Acts and boss round of Casino Street Zone
Finish all 3 Acts and boss round of Lost Labrinth Zone
Finish all 3 Acts and boss round of Mad Gear Zone