CheatCodes.com has the complete list of all Sonic The Hedgehog 2 Arcade Achievements and Gamerscores for Xbox 360, including all secret Achievements. All official Xbox 360 achievements for Sonic The Hedgehog 2 Arcade as of Tuesday December 10, 2013 are shown below, or you can print out our Printable Achievements Checklist that shows all Sonic The Hedgehog 2 Arcade Achievements and Gamerscores in a simple quick-reference format.
Clear the Emerald Hill Zone 1.
Beat Emerald Hill Zone 1 in under 35 seconds in single-player or co-op mode.
Beat Chemical Plant Zone 1 in under 45 seconds.
Get to the Casino Night Zone.
Become Super Sonic.
Stay in Super Sonic mode for one minute.
Get one Chaos Emerald.
Get all the Chaos Emeralds.
Beat the game in under an hour.
Play all four multiplayer zones.
Win 10 versus zones on Xbox Live.
Beat the game.