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.
Play as Tails 50 times.
Collect all Red Star Rings
Clear SYLVANIA CASTLE ZONE, Act 1 in one minute or less.
Defeat all bosses as Super Sonic.
Defeat Metal Sonic in SKY FORTRESS ZONE, Act 1.
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.
Beat Special Stage 1 after collecting every Ring.
Upload a Multiplayer score or time.
Clear SYLVANIA CASTLE ZONE, Act 1.