Complete Green Hill Zone as Miku. Level select is not allowed for this achievement

Complete Marble Zone as Miku. Level select is not allowed for this achievement

Complete Spring Yard Zone as Miku. Level select is not allowed for this achievement

Complete Labyrinth Zone as Miku. Level select is not allowed for this achievement

Complete Star Light Zone as Miku. Level select is not allowed for this achievement

Complete Scrap Brain Zone as Miku. Level select is not allowed for this achievement

Defeat the Noid and complete the game as Miku. Level select is not allowed for this achievement

Defeat the Noid and complete the game as Miku with all 6 Chaos Emeralds. Level select is not allowed for this achievement

This game seems to crash with Genesis Plus GX, I'd recommend PicoDrive, somehow...

Find all three hidden Mikudayo's in Green Hill Zone

Break three different invincibility monitors in a single life

Break a Life Monitor

Earn a Continue in any Special Stage

Obtain a Chaos Emerald

Obtain all six Chaos Emeralds

Unlock Mikudayo as a playable character

Complete Green Hill Zone as Mikudayo. Level select is not allowed for this achievement

Complete Marble Zone as Mikudayo. Level select is not allowed for this achievement

Complete Spring Yard Zone as Mikudayo. Level select is not allowed for this achievement

Complete Labyrinth Zone as Mikudayo. Level select is not allowed for this achievement

Complete Star Light Zone as Mikudayo. Level select is not allowed for this achievement

Complete Scrap Brain Zone as Mikudayo. Level select is not allowed for this achievement

Defeat the Noid and complete the game as Mikudayo. Level select is not allowed for this achievement

Defeat the Noid and complete the game as Mikudayo with all 6 Chaos Emeralds. Level select is not allowed for this achievement

Perform a loop while playing as Mikudayo

Have 100 rings as Mikudayo

Have 200 rings as Mikudayo

Have a Shield, Speed Shoes, and Invincibility at the same time in Green Hill Zone as Mikudayo

Have 10 lives as Mikudayo. Level select is not allowed for this achievement

Reach a score of 250,000 as Mikudayo. Level select is not allowed for this achievement

Defeat the Noid in Marble Zone without getting hit as Mikudayo

Take the secret path in Labyrinth Zone Act 1 as Mikudayo without spawning the hidden platform

Complete Star Light Zone Act 2 in under 1:20 as Mikudayo

Complete Scrap Brain Zone Act 2 as Mikudayo without getting hit

Complete the game as Mikudayo without dying. Level select is not allowed for this achievement

Get all 5 hidden emblems at the end of an act as Mikudayo

Find all three hidden Mikudayo's in Marble Zone

Find all three hidden Mikudayo's in Spring Yard Zone

Find all three hidden Mikudayo's in Labyrinth Zone

Find all three hidden Mikudayo's in Star Light Zone