Through The Looking Glass - Achievement

Through The Looking Glass Achievement - Kill 10 Snipers before they see/shoot you.

Sounds really simple, but sometimes the shots did not count properly. So I created this simple guide to show what needs to be done to get it to register.
FYI: There was a patch addressing this issue.

Looking at the screenshot below, there is a Sniper tagged with the binoculars. There is an Alert Status and it displays Passive. When the Sniper is Passive then take the shot, any other Alert Status will not count towards the Achievement progress.

The Best Spot in the Game is on Siwa Oasis, As seen in the screenshot the Sniper is located on the Mosque/Church after the first AA Gun. Do a Save, Kill, Reload Save if you need to grind for it.

Good Luck and Keep On Sniping!