Here is the full list of all 12 A Number's life achievements.
Perform fifty divisions on the number two.
Move a thousand numbers.
Complete all optional objectives.
Complete half of the levels.
Complete all levels.
Put fifty numbers to sleep.
Obtain the number three fifty times.
Create a level in the sandbox mode.
Share a level created in the sandbox mode.
Complete a level created by the community.
Complete ten levels created by the community.
Complete a hundred levels created by the community.