Watch Your Step!G 5

Watch Your Step! G5:
Loose 5 Troopers to Mines

This achievement requires that you have a cumulative total of of five soldiers die from land mines. Land mines are scattered on the ground throughout the campaign. You need to direct your soldiers into them to cause an explosion to kill them. The first place to unlock this achievement is Mission 2. From the start, follow the linear path around to the left until you reach the minefield. Walk directly into it and hope it kills both your soldiers. Abort the mission, reload and repeat until the achievement unlocks.