I'm a gamer and I play a huge number of FPS, and FPS lead to sniper issues. -_- I found out that the best way to deal with a sniper is to call in an airstrike to suppress the sniper then manuver into a good shooting position that you can see the sniper but he can't see you. It usualy works unless you're dealing with those kind of snipers that are cold to the touch (these guys are usualy real snipers). If you want to deal with those who have real sniper training then you want to have a huge amount of time on your hands, these guys are trained to wait for days, weeks, and even months. The trick to killing these guys is you have to know how to hide, wait, and shoot with one shot one kill (you also need someone with a snipe rifle or anti material rifle in your squad) but things will be tense if you fight these guys...