How to use your sniper rifle is not a problem, you can easily use a sniper rifle as well as other weapons like grenade launchers and rifles.

As you progress, you will find the level to be challenging. In order to survive, you will have to move quickly and carefully. To make matters worse, as you move forward, the wind and distance will kick in as you go along, but you will have some practice.

You will need to read your homework carefully at every level and finish with just one shot. Sometimes you will have to move, you will run. The wind and distance will kick in as you go along, but you will have some practice.