The Sniper 2
Snipe the snipers before they snipe you. Once you start shooting, the sniper timer will count down fast so you may want to try and remember their positions if you can. Watch out for the sneaky soldiers that move in and out of cover. Click Mission Overview or M for your objectives whilst in map view. Press SPACE BAR to toggle between map and sniping view.
Read the instructions in game for more details.