Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Bubbly	Use the bubble.
Dusk Catcher	Unlock the dusk background.
Learner	Complete the tutorial.
Lover	Summon the love bug.
Luminosity	Use the lantern.
Moonlighter	Unlock the moonlight background.
Northern Lights	Unlock the aurora background.
Racer	Unlock timer mode.
Sunsetter	Unlock the sunset background.
Tougher	Unlock medium difficulty.
Toughest	Unlock hard difficulty.