Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Level 4	Complete Level 4.
Level 8	Complete Level 8.
Level 12	Complete Level 12.
Level 16	Complete Level 16.
Level 20	Complete Level 20.
Level 24	Complete Level 24.
Level 28	Complete Level 28.
Level 32	Complete Level 32.
Level 36	Complete Level 36.
Level 40	Complete Level 40.
Level 44	Complete Level 44.
Level 48	Complete Level 48.