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10 of 49 (20%) achievements earned:
Personal Achievements
 

The Opening Act

Completed the first stage.
Unlocked 2 Dec, 2014 @ 11:34pm

GREEN HILL Restored!

Restored the GREEH HILL stage Gate.
Unlocked 2 Dec, 2014 @ 11:43pm

CHEMICAL PLANT Restored!

Restored the CHEMICAL PLANT Stage Gate.
Unlocked 2 Dec, 2014 @ 11:55pm

SKY SANCTUARY Restored!

Restored the SKY SANCTUARY Stage Gate.
Unlocked 3 Dec, 2014 @ 12:25am

Sunny side up

Defeated Death Egg Robot.
Unlocked 16 Apr, 2016 @ 6:22am

Scrap Metal

Defeated Metal Sonic.
Unlocked 16 Apr, 2016 @ 5:41am

Bright Star

Got Rank S in an act.
Unlocked 2 Dec, 2014 @ 11:43pm

Shooting Star

Got Rank S in acts three times.
Unlocked 2 Dec, 2014 @ 11:55pm

Eradicator

Defeated 100 enemies.
Unlocked 3 Dec, 2014 @ 12:05am

Ring King

Reached the goal without dropping any of the rings you collected in GREEN HILL Act 1.
Unlocked 2 Dec, 2014 @ 11:34pm



All Stages Clear!

Cleared Sonic Generations.

Greased Lightning

Cleared Green Hill within one minute.

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.

Trickstar

Executed a trick with a seven-step combo or longer.

Action Hero

Performed all of Sonic's actions in Act 2.

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.

Jump for Joy!

Found the spring hidden in GREEN HILL Act 1 and reached the goal with a Red Star Ring.

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.
+19

19 hidden achievements remaining

Details for each achievement will be revealed once unlocked