Metal Gear Solid: Peace Walker/Extra Ops 003 - Target Practice Score Attack

003 Target Practice: Score Attack
Mother Base Shooting Range

You have 3 minutes to shoot as many targets as you can. The number of targets is unlimited. S-ranking this mission is dependent on accuracy rather than time; miss one headshot and you lose the S-rank. Roughly 23,000 points is what it takes to get the S-Rank. It is suggested you be very comfortable with the gunplay and have a highly accurate, highly-upgraded weapon such as the M16A1 or the FAL with a laser sight. An S-rank on this mission will be very late in the game.

However, if you're playing the mission just for the checkmark, you can stand in front of the firing line while the timer runs out without firing a shot and still get a C-rank and even a bit of heroism.