Play the game in single player on Normal or Hardcore difficulty. This Achievement will unlock upon completion of the sixth mission, "Living Quarter".
Note that the mission is in two parts, so when it first appears that the mission is complete, you're actually just loading into the second half.
Use your vehicles when you approach the first two capture points. At the second point you can also find some weapons in the form of a drone and an air strike. Make sure you get that air strike for taking the first bridge. It will make short work of the tank.
When you try for the tower atop the hill, watch for long-range snipers off the far side. Use your drone here, too, to take out the stationary and sentry guns.