Full list of all 12 Sonic the Hedgehog 4 - Episode II achievements. It takes around 12-15 hours to unlock all of the achievements on Windows.
Defeat Metal Sonic in SKY FORTRESS ZONE, Act 1.
Defeat all bosses as Super Sonic.
Defeat the final foe and watch the ending.
Upload a Multiplayer score or time.
Play as Tails 50 times.
Beat Special Stage 1 after collecting every Ring.
Clear all stages without returning to the World Map.
Collect all seven Chaos Emeralds.
Clear SYLVANIA CASTLE ZONE, Act 1 in one minute or less.
Collect all Red Star Rings
Activate the Rolling Combo with Sonic and Tails.
Clear SYLVANIA CASTLE ZONE, Act 1.