Step 4: Sniping
for a sniper, set yourself up where the enemy wont see you, but they are likely to walk past. Then when they do come shoot, and if your good and you judge the shot right, you should hit them. try and get in a tree or something similar, so that you are above the enemy. this gives you better accuracy. just don't fall out of the tree! double shot can be used for sniping.