Here is the full list of all 14 Finding America: The Heartland achievements.
Collect 15 Stars.
Collect 10 Pieces of Trivia
Complete a Jigsaw Minigame
Complete a Stage Without Using any Hints
Complete a Painting Minigame
Complete a Stage on Picture Mode
Complete a Stage on Riddle Mode
Find 10 Apples
Find 10 Cats
Find 10 Ears of Corn
Finish Chapter 1
Finish Chapter 20
Unlock Unlimited Mode
Unlock 10 Scenes for Unlimited Mode