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21 of 49 (43%) achievements earned:

Personal Achievements
Unlocked Dec 12, 2015 @ 10:01am

The Opening Act

Completed the first stage.
Unlocked Dec 12, 2015 @ 10:11am

GREEN HILL Restored!

Restored the GREEH HILL stage Gate.
Unlocked Dec 17, 2015 @ 4:51pm


Restored the CHEMICAL PLANT Stage Gate.
Unlocked Dec 19, 2015 @ 7:25am


Restored the SKY SANCTUARY Stage Gate.
Unlocked Dec 26, 2015 @ 5:53am


Restored the SPEED HIGHWAY Stage Gate.
Unlocked Dec 27, 2015 @ 2:50pm


Restored the CITY ESCAPE Stage Gate.
Unlocked Dec 27, 2015 @ 3:18pm


Restored the SEASIDE HILL Stage Gate.
Unlocked Dec 26, 2015 @ 3:10am

Sunny side up

Defeated Death Egg Robot.
Unlocked Dec 26, 2015 @ 3:03am

Scrap Metal

Defeated Metal Sonic.
Unlocked Dec 27, 2015 @ 6:12pm

Shadow Boxing

Defeated Shadow.
Unlocked Dec 27, 2015 @ 5:44pm

Greased Lightning

Cleared Green Hill within one minute.
Unlocked Dec 25, 2015 @ 2:09pm

Bright Star

Got Rank S in an act.
Unlocked Dec 26, 2015 @ 3:34am

Shooting Star

Got Rank S in acts three times.
Unlocked Dec 26, 2015 @ 2:50am


Executed a trick with a seven-step combo or longer.
Unlocked Dec 17, 2015 @ 5:05pm


Defeated 100 enemies.
Unlocked Dec 26, 2015 @ 2:59am

Ring King

Reached the goal without dropping any of the rings you collected in GREEN HILL Act 1.
Unlocked Dec 27, 2015 @ 6:47pm

Action Hero

Performed all of Sonic's actions in Act 2.
Unlocked Dec 27, 2015 @ 5:49pm

Jump for Joy!

Found the spring hidden in GREEN HILL Act 1 and reached the goal with a Red Star Ring.
Unlocked Dec 26, 2015 @ 3:37am

Walk on Air

Cleared SKY SANCTUARY without falling even once.
Unlocked Dec 27, 2015 @ 6:47pm

The Byway or the Highway

Got the Red Star Ring located on the shortcut route in SPEED HIGHWAY.
Unlocked Dec 27, 2015 @ 6:06pm

Demolition Derby

Wrecked 30 or more cars in CITY ESCAPE.

All Stages Clear!

Cleared Sonic Generations.

Blazing Meteor

Got Rank S in acts seven times.

Blue Comet

Got Rank S in acts 12 times.

Big Bang

Got Rank S in all acts.

Can't Touch This

Took no damage while defeating the final boss.

Bonds of Friendship

Completed all of Sonic's friends' Challenges.

Walkie Talkie

Chatted with all of Sonic's friends you saved.

Join the Ranks

Joined the rankings.

A 30-Second Test

Participated in a 30 Second Trial.

Walk on Water

Cleared CHEMICAL PLANT without entering the water.

Mad Skillz

Got all custom skills.

(Hedge)Hogging It All Up!

Got all collectibles.

Time Attacker

Played Time Attack on all stages.

Red Ring Collector

Got all Red Star Rings.

Halfway Point

Cleared half the missions.

Mission Accomplished!

Cleared all the missions.

12 hidden achievements remaining

Details for each achievement will be revealed once unlocked