Collected all gold medallions in Bonus stage

Collected all silver medallions in Bonus stage

Collected all seven Chaos Emeralds

Beat the game (any ending)

Spun a Star Post 10 times by going fast

Uncovered two item boxes with a single Goal Plate

Burnt a log bridge in Green Hill Zone

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

Had Shutterbug take 10 photos

Flown through a ship window in Flying Battery Zone Act 2

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

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

Found and rode all the boats in Hydrocity Zone Act 1

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

Found the secret submarine in Oil Ocean Zone Act 2

Defeated a Rexon with the Walker Legs in Lava Reef Zone

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

Beat Titanic Monarch Zone Act 1 without taking a single hit