Here is the full list of all 23 My Memory of Us achievements.
Complete all levels
Win the boss fight without taking more than 3 hits in „Parents, Bathtub and Giant Fish”
Visit one node in the labyrinth 3 times in „Parents, Bathtub and Giant Fish”
Complete labyrinth mingame in „Parents, Bathtub and Giant Fish” in less than 40 seconds.
Find all Memories
Complete ball minigame in „Parents, Bathtub and Giant Fish” in less than 40 seconds.
Get the key with 3 or less drone route changes in „The Forest”
Complete „The Leviathan”
Deliver the love letter in „The Leviathan”
Find the truth behind propaganda in „The Leviathan”
Set all the posters without starting any alarm in "Call To Arts"
Finish printing without making mistakes in „Call To Arts”
Complete „The Inferior World”
Find half of the Memories
Complete bike minigame without any mistakes in „Inferior World”
Complete „Changes, Changes, Changes” without alarming any enemies
On "Interrupted Adventure" after you find the Girl never again leave her in the darkness
Complete „You're Not Alone Anymore”
Make no more than 2 mistakes while dancing in „The Thief’s Duty”
Finish dinner puzzle in 13 moves or less in "Roof Over The Head"
Put 3 apples in the basket with one shot in "Roof Over The Head"
Take her hand for the first time
Play the game on September 1st