Here is the full list of all 10 Frogs vs. Storks achievements.
Play through one stage.
Play through 40 levels.
Get the maximum score in one stage.
Get the maximum score in 20 levels.
Get the maximum score in 40 levels.
Finish a generated level.
Eat 50 eggs.
Eat 100 golden eggs.
Eat 50 mosquitoes.
Eat 100 dragonflies.