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