Here is the full list of all 21 Little Dragons Caf achievements.
Cleared Prologue
Cleared Chapter 1
Cleared Chapter 2
Cleared Chapter 3
Cleared Chapter 4
Cleared Chapter 5
Cleared Chapter 6
Cleared Chapter 7
Cleared Chapter 8
Cleared Chapter 9
Cleared Chapter 10
Cleared Chapter 11
The dragon reaches adulthood
Game Cleared
Collect all recipes
Collect all ingredients
50 customers or more come in a day
Helped out at the cafe more than 50 times in a day
Get "Happy" as a feedback
Have 10 items on the Café menu
Completely change the dragon's color