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