Sonic the Hedgehog 2 achievements

3.15%
Online Racer
Win 10 versus zones in online play.
5.21%
Xbox Live Racer
You won 10 versus zones on Xbox Live.
7.82%
Conquering Time
Beat the game in under an hour.
10.99%
Super Sonic
Become Super Sonic.
10.99%
Extended Super
Stay in Super Sonic mode for one minute.
11.17%
Chaos Master
Get all the Chaos Emeralds.
11.36%
Fast Chemical
Beat Chemical Plant Zone 1 in under 45 seconds.
16.20%
Win
Beat the game.
19.18%
All Multiplayer
Play all four multiplayer zones.
21.97%
Fast Emerald
Beat Emerald Hill Zone 1 in under 35 seconds in single-player or co-op mode.
38.36%
Chaos Emerald
Get one Chaos Emerald.
39.11%
Casino
Get to the Casino Night Zone.