Here is the full list of all 17 Rumu achievements.
Open the game for the first time
Clean your first mess
Meet Ada the cat
Route power successfully
Read a book
Clean 10 messes
Route Power in Every Room
Read Every Book
Catch Every insect
Go Against Sabrina's Wishes
Find Sabrina the daughter's bedroom
Find MESSR
Discover the truth about David and Cecily (Day 7)
Finish (Day 2)