Call of Duty: Modern Warfare 2 (2009)

You will get this achievement after successfully completing the training mission. You will start off on the target range where you will be instructed to shoot targets from the hip, whilst crouched and then through timber. After this you will then be told to head on over to "The Pit". "The Pit" is a shortened assault course where you will have to go through shooting the enemy cut outs and avoiding the civilians.

The very first mission of the game. You start off shooting targets from the hip, then aiming down your sights, then taking a quick test (Shoot all of the targets as fast as possible while aiming down sights).

Next, a target will appear above a piece of wood. Shoot the target, then the bullet will automatically hit the wood.

Next, just throw a frag grenade at the targets.

Then you're sent to the pit to run a obstacle course. You can get two achievements for the price of One. The other achievement is called Pit Boss.

1:Run the course normally once.
2:When you return, Search the table for a G18 Pistol.
3:Also check you have A M9 pistol (For accuracy Bonus).
4:Aim down sights at targets with G18 (Lots of bullets come out) until before you enter the building.
5:Switch to M9 Quickly before you enter.
6:Shoot the 3 Targets.
7:Knife the next target.
8:Continue firing with M9, while aimng down sights.
9:Shoot the last targets (Watch out for civilians).
10:Sprint to the end.

I got 28.45 sec.
Choose your difficulty.
Climb up the stairs.
Watch the short cutscene.
25G!