Here is the full list of all 15 Aristocunts achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Complete Chapter 1
Complete Chapter 2
Complete Chapter 3
Complete Chapter 4
Complete Chapter 5
Complete Chapter 6
Complete Chapter 7
Complete Chapter 8
Complete Chapter 9
Complete Chapter 10
Complete Chapter 11
Complete Chapter 12
Complete Chapter 13
Complete Chapter 14
Complete Chapter 15