Win
You beat the game.
35 ✓ December 1st, 2008
Fast Chemical
You beat Chemical Plant Zone 1 in under 45 seconds.
20 ✓ December 1st, 2008
Fast Emerald
You beat Emerald Hill Zone 1 in under 35 seconds in single-player or co-op mode.
15 ✓ December 1st, 2008
Casino
You got to the Casino Night Zone.
10 ✓ December 1st, 2008
Chaos Emerald
You got one Chaos Emerald.
10 ✓ November 30th, 2008
Conquering Time
You beat the game in under an hour.
10 ✓ December 1st, 2008
Emerald Hill
You cleared the Emerald Hill Zone 1.
5 ✓ November 30th, 2008
All Multiplayer
You played all four multiplayer zones.
5 ✓ December 1st, 2008
Chaos Master
You got all the Chaos Emeralds.
40 
Super Sonic
You became Super Sonic.
20 
Extended Super
You stayed in Super Sonic mode for one minute.
20 
Xbox Live Racer
You won 10 versus zones on Xbox Live.
10