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.
Beat Special Stage 1 after collecting every Ring.
Play as Tails 50 times.
Upload a Multiplayer score or time.
Collect all Red Star Rings
Clear SYLVANIA CASTLE ZONE, Act 1 in one minute or less.
Defeat Metal Sonic in SKY FORTRESS ZONE, Act 1.
Defeat all bosses as Super Sonic.
Collect all seven Chaos Emeralds.
Defeat the final foe and watch the ending.
Clear all stages without returning to the World Map.
Activate the Rolling Combo with Sonic and Tails.
Clear SYLVANIA CASTLE ZONE, Act 1.