Obsessive Safe-cracker

Obsessive Safe-cracker is an achievement/trophy in Dishonored: Death of the Outsider.

How to Acquire
To unlock this achievement, Billie Lurk has to open Jindosh's safes inside the Elevator Vault at Dolores Michaels Deposit & Loan Bank during the mission The Bank Job. Each safe has a three digit combination, excluding the fourth which is unlocked by the keys of Shan Yun and Ivan Jacobi. The solution to the combinations can be found in the note Notes on The Vault Safe Code and the blackboard next to it.

The solution is a long sequence where every number after the first two is the sum of the two preceding one.:
 * 0
 * 1
 * 0 + 1 = 1
 * 1 + 1 = 2
 * 1 + 2 = 3
 * 2 + 3 = 5
 * 3 + 5 = 8
 * 5 + 8 = 13
 * 8 + 13 = 21
 * 13 + 21 = 34
 * 21 + 34 = 55
 * 34 + 55 = 89
 * 55 + 89 = 144

The sequence has to be set through all 5 safes minus the fourth which skips it:
 * 1) 0 1 1
 * 2) 2 3 5
 * 3) 8 1 3
 * 4) Skips
 * 5) 4 5 5
 * 6) 8 9 1

Once all safes are set, they open altogether.

Trivia
Медвежатник-перфекционист
 * This number sequence is the Fibonacci sequence.