Sniper Elite 3 Optional Objectives Guide [PS4-Xbox One-360-PS3-PC]
To complete Sniper Elite 3 we will have to complete the optional objectives as well ...Guide Trophy / Objective "Nothing is optional"
To unlock this achievement you must complete all 18 optional lenses of the game. These are different types of assignments (such as carrying out a certain number of kills in a certain way) assigned during the course of the missions with messages appearing on the screen.
Below you can see a video that shows, one by one, what they are and how to complete all the optional objectives of Sniper Elite 3.
Important: consult the Sniper Elite 3 cheats and guides tab for other useful guides on this game.