Call of Duty 3

When sniping, get into a nook or cranny or other some small place where you can either crouch or go prone. You should also try to get a good view on your targets. Tall grass is also a great idea, or even better, an area where people will not realize you are there (for example, camping on the enemy's spawn point). When sniping on a very tricky target, or if you do not want to be seen, try your best to pull out your pistol and use your binoculars to spot your target. It is interesting how much less obvious your position is if you use your binoculars. Although many people will debate this, do not take any more shots than you need to. If possible, try to take them out in one shot. Do not shoot unless you are sure that you can kill them without one of their friends recognizing your position.

On the second mission, The Island, there will be a man under the second bridge with a FG42 scoped. That
gun will get more ammunition every time you kill someone. The gun starts with 96 ammo remaining and you can kill about 150 people with it (not including melee). After completing that mission you will have that gun on the third mission, but you must save the gun through the third mission to get it in the fourth mission and so on.