Sonic the Hedgehog (1991) achievements

17.12%
Fast Marble
Beat Marble Zone Act 1 in under 80 seconds.
18.86%
Perfect Win
Beat the game without dying.
19.11%
Chaos Master
Get all the Chaos Emeralds.
25.56%
Win
Beat the game.
28.04%
Star Light Zone
Get to the Star Light Zone.
37.47%
Labyrinth Zone
Get to the Labyrinth Zone.
42.18%
Fast Green
Beat Green Hill Zone Act 1 in under 35 seconds.
44.42%
Spring Yard Zone
Get to the Spring Yard Zone.
51.12%
Chaos Emerald
Get one Chaos Emerald.
65.51%
Centurion
Get 100 or more rings.
80.65%
Clear Green
Clear the Green Hill Zone.