Here is the full list of all 25 Clouds & Sheep 2 achievements.
Plant 100 conifers!
Find 100 hidden Easter eggs!
Equip a male white sheep with a cowboy hat in the Prairie!
Shear 100 sheep!
Equip a male black sheep with a pirate hat on Treasure Island!
Roll a sheep against a pinwheel!
Find the Fountain of Youth!
Let a single sheep jump 100 times on the trampoline!
Give your sheep 10 hats!
Let a sheep do a full swing!
Solve 100 quests!
Spend 100 balls of wool on painting sheep!
Purchase 10 decorative objects!
Get 10 sheep!
Toss 100 sheep!
Split 100 clouds!
Let your sheep get struck by lightning 25 times!
Let your sheep eat 100 tufts of grass!
Build 11 snowmen!
Try to hit a lamb with lightning bolts 10 times!
Build a snowman using two baby sheep snowballs!
Touch 100 clouds!
Let 3 clouds rain at the same time!
A sheep died and became a cloud!
Match a loving couple!