Here is the full list of all 11 Micron achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Complete all bonus levels.
Complete all levels in Micron.
Complete the main game.
Complete all levels in the main game.
Complete all purple levels in the main game.
Complete all orange levels in the main game.
Complete all green levels in the main game.
Complete all grey levels in the main game.
Complete all red levels in the main game.
Complete all blue levels in the main game.
Complete the tutorial level.