Here is the full list of all 37 Mushroom Cats 2 achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
ISLAND 1 DONE!
ISLAND 2 DONE!
ISLAND 3 DONE!
SHIP DONE!
FISH DONE!
Help the Cat.
Help the Cat Mother.
Help the Cat Master.
Collect all the Butterflies!
Help the cloud Kittens.
Help the first Cat.
Help the Big Rat.