Trickstar
Not unlocked yetExecuted a trick with a seven-step combo or longer.
Eradicator
Not unlocked yetDefeated 100 enemies.
Ring King
Not unlocked yetReached the goal without dropping any of the rings you collected in GREEN HILL Act 1.
Action Hero
Not unlocked yetPerformed all of Sonic's actions in Act 2.
Can't Touch This
Not unlocked yetTook no damage while defeating the final boss.
Bonds of Friendship
Not unlocked yetCompleted all of Sonic's friends' Challenges.
Walkie Talkie
Not unlocked yetChatted with all of Sonic's friends you saved.
Join the Ranks
Not unlocked yetJoined the rankings.
A 30-Second Test
Not unlocked yetParticipated in a 30 Second Trial.
Jump for Joy!
Not unlocked yetFound the spring hidden in GREEN HILL Act 1 and reached the goal with a Red Star Ring.
Walk on Water
Not unlocked yetCleared CHEMICAL PLANT without entering the water.
Walk on Air
Not unlocked yetCleared SKY SANCTUARY without falling even once.
The Byway or the Highway
Not unlocked yetGot the Red Star Ring located on the shortcut route in SPEED HIGHWAY.
Demolition Derby
Not unlocked yetWrecked 30 or more cars in CITY ESCAPE.
Secret Sleuth
Not unlocked yetGot the Red Star Ring located in the hidden room in SEASIDE HILL.
Look Both Ways
Not unlocked yetReached the goal in CRISIS CITY without being hit by a tornado-carried car.
A Quick Breather
Not unlocked yetGot the Red Star Ring atop the highest spot in ROOFTOP RUN.
Color Power!
Not unlocked yetGot the Red Star Ring by using an Orange Wisp in PLANET WISP.
Supersonic!
Not unlocked yetCleared a regular stage as Super Sonic.
Mad Skillz
Not unlocked yetGot all custom skills.
(Hedge)Hogging It All Up!
Not unlocked yetGot all collectibles.
Time Attacker
Not unlocked yetPlayed Time Attack on all stages.
Red Ring Collector
Not unlocked yetGot all Red Star Rings.
Halfway Point
Not unlocked yetCleared half the missions.