All Stages Cleared! - Defeat the final boss and view the ending.
Contender - Upload your recorded scores and clear times for all stages.
Crush Dr. Eggman - Defeat a boss for the first time.
Enemy Hunter - Defeat 1,000 enemies.
Golden Flash - Clear all Acts as Super Sonic.
Immortal - Build up 99 or more extra lives.
Ring Collector - Collect all the Rings in 'Special Stage 1' and Clear the stage.
Speed's My Game - Clear SPLASH HILL ZONE ACT 1 in less than a minute.
Super Sonic Genesis - Acquire all seven Chaos Emeralds.
The First Chaos Emerald - Acquire a Chaos Emerald.
The Story Begins - Clear SPLASH HILL ZONE, ACT 1.
Untouchable - Clear the E.G.G. STATION ZONE without taking any damage.