Sniper Elite 3
70 Achievements
1,440
40-50h
Through the looking glass
Kill 10 snipers before they see you
10
How to unlock the Through the looking glass achievement in Sniper Elite 3 - Definitive Guide
+1
UPDATE: try Mission 5 first. Seems to have a higher success rate judging by the comments in different youtube guides. also "ThisOnes4Dixie o" wrote that it instantly unlocked on 5 when 7 didn't work.
--------------------------------
Mission 7
Your first shot doesn't blow your cover but you have to take the second shot pretty quickly or you get spotted. Load your savegame and repeat.
Mission 5
Look out the window and wait for the enemy sniper on one of the rooftops. I highlighted the 3 spots he will pop up in the video. He patrols this roof and moves between 4 different spots. One Spot is on the backside and he will be gone for about 60 seconds. Just wait for him to come back to the front side. As soon as he shows up make a manual save so you don't have to wait for him after loading. repeat this 9 more times and the achievement is yours.
On Marksman difficulty, it's a really easy shot and I can confirm that reloading your save and shooting him ten times will unlock the achievement.
As soon as you start Mission 5: Siwa Oasis, go to the right and get to the visible AA gun. Clear the area out and turn left towards the truck. Clear this area out and look towards the big, official looking building. Up on top is a lone sniper. Once you see him, tag him and save the game. Then take the shot and reload the save until the trophy pops up.
Credit goes to 360GameTV for the video guide.
There are many methods to do this, but it is recommended that this is boosted using Mission 7: Pont du Fahs Airfield. Start the level on Cadet difficulty, run down the hill from the spawn, and take a left hand turn towards the objective. Run forward until you are 191m away from the objective and sitting next to a rock. If you take out your binoculars, and look towards the top of the rocks in the distance, you will see a sniper lying down and waiting. It may take you a few seconds to locate him, and you can use the video for reference if needed. Once you see him and know his location, scope in, hold your breath and shoot him. If you don't kill him on your first shot, you have a small window of time to shoot again before he sees you. Once you kill him, or are spotted, pause the game and select "Load Last Save", and repeat this process until the achievement unlocks. This is the only method that I have confirmed to work every time.
There are many methods to do this, but it is recommended that this is boosted using Mission 7: Pont du Fahs Airfield. Start the level on Cadet difficulty, run down the hill from the spawn, and take a left hand turn towards the objective. Run forward until you are 191m away from the objective and sitting next to a rock. If you take out your binoculars, and look towards the top of the rocks in the distance, you will see a sniper lying down and waiting. It may take you a few seconds to locate him, and you can use the video for reference if needed. Once you see him and know his location, scope in, hold your breath and shoot him. If you don't kill him on your first shot, you have a small window of time to shoot again before he sees you. Once you kill him, or are spotted, pause the game and select "Load Last Save", and repeat this process until the achievement unlocks. This is the only method that I have confirmed to work every time.