Double tap 10 GS
Incapacitated 2 vehicles in Kasserine Pass within 5 seconds
Unlocked during Mission 6: Kasserine Pass.
A relatively easy achievement to unlock. Proceed through the mission taking out the two Nebelwerfers. I unlocked this achievement in the village area near to the second Nebelwerfer by the old church.
I came through the mountain tunnels to the Snipers nest, it was here that I took out the 2nd Nebelwerfer by shooting the red explosive barrel near to it. After the Nebelwerfer explodes you should see a truck with enemies in the rear pull up and park on a sandy bank opposite the old church. there were only two guards patrolling near the truck, take these out silently and wait for the halftrack to pass by at the other end of the village, as soon as it does run up to the road it uses and place a mine, then run back to the parked truck and place either dynamite, a trip mine or a vehicle mine and move back a safe distance and then check that you can see whatever explosive item you put down by the truck and wait for the halftrack to come round again, when the halftrack hits the mine and explodes take aim and shoot the explosive item you placed by the truck (or throw a grenade), and the achievement / trophy is yours.
Remember to save often, and certainly make sure you save before placing the mine for the halftrack..
http://game-play.tv/video/MBBSK896A4R9/Sniper-Elite-3-Double...