The guide on unlocking the achievements includes spoliers. The game itself is rather short, that is why the author insists on completing it all by yourself. The guide will be completed as soon as possible.
Manual: in the game, you would constantly be needing to make decisions, that is why the guide includes only the order of choices that is required to be performed in order to unlock a specific achivement.
Chapter one
“Greetings from the past”
Read the letter
Go to the café
Ask Darina to stay
“Barking subsided”
Read the letter
Go to work
Then freeze in place
“Broken hands”
Read the letter
Go to work
Run away from the dogs
Go home to change
“Handkerchief”
Go to work
Step back
Go to the cafe
“Hold your breath!”
Go to work
Help a child
Go to the cafe
CHAPTER TWO:
“Crimson stream”
Simply snatch your diary in the beginning of the chapter
“Old friend”
Reply “yes” to Max
Then choose “What was that?” option
“Broken Story” (hidden achievement)
Ask him to give it back
Keep silence
Answer the call [x10]
CHAPTER THREE:
“Choo-choo”
Go to work
Then spy on a double
“Gigantic whale”
Go to work
Keep on going to work
“Can I go?”
“To lie down”
Rest
And continue sleeping
“You have so much to work”
Rest
Go to the front door
Go to the work
Accept
“Is there anything else to do?”
“Again twin”
Go to work
Spy on a double
Go to work
Accept the insurance case
“Can I go?”
“To work”
Go to work
Go to work
Decline
“Is there anything else to do?”
How to unlock Chapters?
To unlock 2nd Chapter:
Chapter One:
Hurry to work
Help
Stay at work
To unlock 3rd Chapter:
Chapter Two
Ask him to give it back
Keep silence
Ignor the Call
“No, thank You”