Chaos Master
You got all the Chaos Emeralds.
40 ✓ October 17th, 2007
Win
You beat the game.
35 ✓ October 21st, 2007
Fast Chemical
You beat Chemical Plant Zone 1 in under 45 seconds.
20 ✓ October 17th, 2007
Super Sonic
You became Super Sonic.
20 ✓ October 17th, 2007
Extended Super
You stayed in Super Sonic mode for one minute.
20 ✓ October 17th, 2007
Fast Emerald
You beat Emerald Hill Zone 1 in under 35 seconds in single-player or co-op mode.
15 ✓ October 17th, 2007
Xbox Live Racer
You won 10 versus zones on Xbox Live.
10 ✓ April 4th, 2008
Casino
You got to the Casino Night Zone.
10 ✓ October 18th, 2007
Chaos Emerald
You got one Chaos Emerald.
10 ✓ October 17th, 2007
Conquering Time
You beat the game in under an hour.
10 ✓ October 21st, 2007
Emerald Hill
You cleared the Emerald Hill Zone 1.
5 ✓ October 17th, 2007
All Multiplayer
You played all four multiplayer zones.
5 ✓ October 17th, 2007