No Way? No Way!

Collected all gold medallions in Bonus stage

Full Medal Jacket

Collected all silver medallions in Bonus stage

Magnificent Seven

Collected all seven Chaos Emeralds

See You Next Game

Beat the game (any ending)

Superstar

Spun a Star Post 10 times by going fast

That's a Two-fer

Uncovered two item boxes with a single Goal Plate

Now It Can't Hurt You Anymore

Burnt a log bridge in Green Hill Zone

Triple Trouble

Got a 3 chain combo in Chemical Plant Act 2 or in Mean Bean mode

The Most Famous Hedgehog in the World

Had Shutterbug take 10 photos

Window Shopping

Flown through a ship window in Flying Battery Zone Act 2

Crate Expectations

Found the hidden room in Press Garden Zone and destroyed all breakable crates as Sonic

King of Speed

Got to the Stardust Speedway Zone Act 2 tower in under a minute

Boat Enthusiast

Found and rode all the boats in Hydrocity Zone Act 1

The Password is "Special Stage"

Found the barrel that leads to a Special Ring in Mirage Saloon Zone Act 2

Secret Sub

Found the secret submarine in Oil Ocean Zone Act 2

Without a Trace

Defeated a Rexon with the Walker Legs in Lava Reef Zone

Collect 'Em All

Activated and destroyed eight simultaneous Eggmins during Metallic Madness Zone Act 2

Professional Hedgehog

Beat Titanic Monarch Zone Act 1 without taking a single hit