Welcome to Chris Ryan’s Sniper School.Her you will have a chance to practice your shooting skills on three training games before you embark on your first mission. The training ranges get progressively more difficult, so you have to watch your targets and your ammo. Instructions. Use your mouse to aim and your mouse button to fire. You’ll put the crosshairs on your target and when the time is right, squeeze off the round. At times the game is stingy with ammo, so use it wisely. The game also offers Chris Ryan’s books, but if you’re like me you came to play, not read.