Achievements
Complete each achievement to get the allotted gamerscore:
A Golden Wave (10) - Defeat all bosses as Super Sonic.
All Stages Cleared! (10) - Defeat the final foe and watch the ending.
Endurance Race (25) - Clear all stages without returning to the World Map.
All Chaos Emeralds Found! (30) - Collect all seven Chaos Emeralds.
All Red Star Rings Found! (40) - Defeat the final foe after collecting every Red Star Ring.
I Love Tails (10) - Play as Tails 50 times.
Ring Collector (15) - Beat Special Stage 1 after collecting every Ring.
Rolling Combo! (5) - Activate the Rolling Combo with Sonic and Tails.
Metal Sonic Falls (5) - Defeat Metal Sonic in SKY FORTRESS ZONE, Act 1.
Proof of Speed (35) - Clear SYLVANIA CASTLE ZONE, Act 1 in one minute or less.
Tag Partner (10) - Upload a Multiplayer score or time.
The Adventure Begins (5) - Clear SYLVANIA CASTLE ZONE, Act 1.
Unlock Avatar Awards
Dr. Eggman Modern Costume (Body) - Defeat the last boss without taking damage.
Dr. Eggman Modern Costume (Legs) - Defeat the "Sylvania Castle Zone" boss without taking damage.