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