|Achievement||How to unlock
- Dr. Eggman Got Served (30)
- Destroy Dr. Eggman's final machine.
- Defeat Metal Sonic without getting hurt.
- Complete the Time Attack mode in under 25 minutes.
- Just One Hug is Enough (5)
- Complete a Zone in the Good Future.
- Saviour of the Planet (40)
- Destroy all the robot transporters and Metal Sonic holograms in the past.
- Find the angel statue in Wacky Workbench.
- Pass the upper signpost in Collision Chaos Zone 2.
- Collect all the Time Stones.
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