Here is the full list of all 50 Black Book achievements.
Collect all the songs
Become a mistress of Hell
Succumb to Dark forces
Meet your beloved one
Complete Chapter 7
Collect 4 copies of each card
Compose a spell out of 13 words
Unlock all the words
Unlock all the black words
Break all the seals
Complete Chapter 6
Retrieve the Book
Acquire 100 sins
Visit 333 locations
Collect 70 encyclopedia entries
Complete Chapter 5
Collect 50 bailichkas
Complete Karnysh loyalty quest
Talk with 100 characters
Win 3 times in a card game while cheating
Read 77 entries in the Onomasticon
Complete Chapter 4
Find all the clues in Nemzya
Gather 66 herbs
Complete Chapter 3
Answer 40 Knowledge questions
Collect 30 bailichkas
Guess the road in the cursed forest
Complete Old Egor loyalty quest
Don't release the Mermaid
Complete Chapter 2
Release the Mermaid
Take seven demons to your service
Complete Proshka loyalty quest
Win 5 times in a card game
Complete White Head loyalty quest
Cow level
Gather 33 herbs
Release seven dead men
Collect 30 encyclopedia entries
Answer 25 Knowledge questions
Negotiate with Susedko on Zemskaia station
Complete Chapter 1
Guess all the Obderiha riddles with the first attempt
Collect 10 bailichkas
Complete Nikolay loyalty quest
Answer 10 Knowledge questions
Gather 13 herbs
Collect 10 encyclopedia entries
Complete the Prologue