Complete the indicated task to unlock the achievement.

Achievement	How to unlock
100_Levels	Unknown.
25_Levels	Unknown.
5_Levels	Unknown.
50_Levels	Unknown.
80_Levels	Unknown.
A_True_Artist	Unknown.
Clean_Slate	Unknown.
Collector	Unknown.
Didn't_Know_The_Ledge	Unknown.
Diminutive_Stature	Unknown.
Geometric	Unknown.
Hard_Mode	Unknown.
Join_the_Core	Unknown.
Just_a_Learning_Experience	Unknown.
Keeps_Going_and_Going	Unknown.
Lateral_Thinking	Unknown.
Mission_Impossible	Unknown.
Normal_Mode	Unknown.
Powered_Up	Unknown.
Sampling_of_Wares	Unknown.
Silver_Lining	Unknown.
Surmounted_the_Impossible	Unknown.
Traveler	Unknown.
Trifold	Unknown.
Wouldn't_It_Be_Cool_If	Unknown.
You_Got_This	Unknown.