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