Here is the full list of all 19 Escape Memoirs: Mansion Heist achievements.
Find All Collectibles
Find 20 Collectibles
Find 15 Collectibles
Find 10 Collectibles
Study the Constellations
Get the Gold
Bribe the Cat
Reach the Great Room
Open the Security Storage Box
Open the Metal Cabinet
Solve the Weight Puzzle
Open the Musical Box
Find 5 Collectibles
Open the Toy Box
Use the Code in the Photograph
Solve the Vase Puzzle
Enter the Study
Solve the Wheatstone Prototype
Use the Decrypted Code