Get all the Chaos Emeralds.
Beat the game without dying.
Beat the game in under 40 minutes.
Beat the game.
Get to the Star Light Zone.
Get to the Labyrinth Zone.
Get to the Spring Yard Zone.
Beat Marble Zone Act 1 in under 80 seconds.
Get one Chaos Emerald.
Clear the Green Hill Zone.
Get 100 or more rings.
Beat Green Hill Zone Act 1 in under 35 seconds.