Here is the full list of all 27 Think of the Children achievements.
Create a custom character
Finish the story solo
Finish the story with two or more players
Top Tier Parenting. Get an A+ in every level.
Top Tier Family. Get an A+ in every level together.
Get an A+ on the Park Level
Get an A+ on the Beach Level
Get an A+ on the Store Level
Get an A+ on the Party Level
Get an A+ on the Airport Level
Get an A+ on the Skydiving Level
Get an A+ on the Outback Level
Get an A+ on the Camp Safety Level
Get an A+ on the Bonfire Level
Get an A+ on the Zoo Level
Get an A+ on the Ocean Level
Get an A+ on the Final Level
Lose the game in less then 20 seconds
Win a level without picking up a child
Throw the same child 10x in a row
Watched the end Credits. Thanks for playing!
Make 50 produce splatters
Talk to all guest at the party in under 20 seconds
Touch poo while wearing a poo hat
Wear a mix of Angel and Devil Clothing
Stayed on the loading screen for five minutes
Wear the Chocolate Cake Hat