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