The Sniper resembles the basic Drone unit but they wear specialized infrared goggles and are far more capable marksmen. While they are particularly good marksmen, they do have a tendency to shoot prematurely which is usually your first indicator that they are in the area. Listen for the distinctive sound of a Longshot or One-Shot during combat to find out if they are present.
Generally speaking, there are only two ways to deal with a Sniper (and in some cases, only one). The first is the most obvious -- use a long range weapons such as the Longshot or Markza to counter-snipe the enemy. In some cases, this is the only method you have for dealing with this enemy. However, in some cases, the point where the Sniper is perched is accessible and you can flank their position to take them out.
