| Achievement | How to unlock
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- (Hedge)Hogging It All Up! (50 points)
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- A 30-Second Test (20 points)
| - Participate in a 30 Second Trial.
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- A Quick Breather (10 points)
| - Got the Red Star Ring atop the highest spot in ROOFTOP RUN Act 2 and reached the goal.
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| - Perform all of Sonic's moves in Act 2.
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- All Stages Cleared! (50 points)
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- Blazing Meteor (30 points)
| - Get Rank S in seven Acts.
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| - Get Rank S in twelve Acts.
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- Bonds of Friendship (10 points)
| - Complete all Challenge Acts featuring Sonic's friends.
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- Boom Boom Dragoon (30 points)
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- CHEMICAL PLANT Restored! (15 points)
| - Restored the CHEMICAL PLANT Stage Gate.
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- CITY ESCAPE Restored! (15 points)
| - Restored the CITY ESCAPE Stage Gate.
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- CRISIS CITY Restored! (15 points)
| - Restored the CRISIS CITY Stage Gate.
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- Can't Touch This (30 points)
| - Took no damage from the final boss and cleared the stage.
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| - Got the Red Star Ring by using an Orange Wisp in PLANET WISP Act 2 and reached the goal.
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- Demolition Derby (10 points)
| - Wrecked 30 or more cars in CITY ESCAPE Act 2.
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- GREEN HILL Restored! (15 points)
| - Restored the GREEN HILL Stage Gate.
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- Greased Lightning (10 points)
| - Clear GREEN HILL Act 1 within one minute.
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- Halfway Point (30 points)
| - Clear half the Challenge Acts.
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- Join the Ranks (20 points)
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- Jump for Joy! (10 points)
| - Found the spring hidden in GREEN HILL Act 1 and reached the goal with a Red Star Ring.
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- Look Both Ways (10 points)
| - Reached the goal in CRISIS CITY Act 2 without being hit by a tornado-carried cars or rocks.
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- Mission Accomplished! (30 points)
| - Clear all the Challenge Acts.
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- PLANET WISP Restored! (15 points)
| - Restored the PLANET WISP Stage Gate.
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- Perfect Punisher (25 points)
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- ROOFTOP RUN Restored! (15 points)
| - Restored the ROOFTOP RUN Stage Gate.
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- Red Ring Collector (30 points)
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| - Reach the goal without dropping any of the rings you collected in GREEN HILL Act 1.
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- SEASIDE HILL Restored! (15 points)
| - Restored the SEASIDE HILL Stage Gate.
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- SKY SANCTUARY Restored! (15 points)
| - Restored the SKY SANCTUARY Stage Gate.
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- SPEED HIGHWAY Restored! (15 points)
| - Restored the SPEED HIGHWAY Stage Gate.
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- Secret Sleuth (10 points)
| - Got the Red Star Ring located in the hidden room in SEASIDE HILL Act 1 and reached the goal.
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- Shadow Boxing (25 points)
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- Shooting Star (20 points)
| - Get Rank S in three Acts.
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- Silver Got Served (30 points)
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- Sunny Side Up (20 points)
| - Defeated Death Egg Robot.
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| - Cleared a regular stage as Super Sonic.
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- The Byway or the Highway (20 points)
| - Got the Red Star Ring located on the shortcut route in SPEED HIGHWAY Act 2 and reached the goal.
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- The Opening Act (10 points)
| - Race through the first stage.
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- Time Attacker (30 points)
| - Play Ranking Attack on all stages.
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- Treasure Hunter (20 points)
| - Collected all the Chaos Emeralds.
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| - Pull off a seven or more trick combo or six trick combo ending in a finishing trick.
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| - Cleared SKY SANCTUARY Act 1 without falling and losing a life.
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- Walk on Water (10 points)
| - Cleared CHEMICAL PLANT Act 2 without entering the water.
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- Walkie Talkie (10 points)
| - Chat with each of Sonic's friends you have saved.
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