Retro Achievement for Sonic the Hedgehog

Welcome to South Island

Troubled Waters

The Damp Depths

Eggman's Maze

Thunderbolts and Lightning

Jewelry Shopping

Sonic Stockpile

Tastes Like Neon

Bumper Hogs

Halfway Hedgehog

Sonic and the Secret Rings

Say Cheese!

Six Gorgeous Gems

South Island Saviour

Superb Specialty

South Island Hero

Forager Hedgehog

Life Insurance

Boost Mode

I Will Survive

South Island Minimalist

South Island Superstar