Call of Duty: Modern Warfare 2

This is a story related trophy, and will pop at the end of the mission "S.S.D.D". This trophy is unmissable.

This mission is basically the training mission, you start by taking orders to shoot the targets with different methods such as from the hip and aiming down your sights. You then practice throwing grenades. Once you’ve done that you need to go to the other training run called the pit. The pit is just a course in which you shoot the enemy targets and avoid the civilians. Do it as quick as you can then you need to select difficulty, if you want the  in one playthrough set it to veteran at this stage, then the base is attacked and the screen darkens out. The mission then ends.