ACHIEVEMENT - HOW TO UNLOCK
A Golden Wave - Defeat all bosses as Super Sonic.
All Chaos Emeralds Found! - Collect all seven Chaos Emeralds.
All Red Star Rings Found! - Collect all Red Star Rings
All Stages Cleared! - Defeat the final foe and watch the ending.
Endurance Race - Clear all stages without returning to the World Map.
I Love Tails - Play as Tails 50 times.
Metal Sonic Falls - Defeat Metal Sonic in SKY FORTRESS ZONE, Act 1.
Proof of Speed - Clear SYLVANIA CASTLE ZONE, Act 1 in one minute or less.
Ring Collector - Beat Special Stage 1 after collecting every Ring.
Rolling Combo! - Activate the Rolling Combo with Sonic and Tails.
Tag Partner - Upload a Multiplayer score or time.
The Adventure Begins - Clear SYLVANIA CASTLE ZONE, Act 1.