- Consider playing a character with the Explosives Bonus skill (Sarge, Jaeger, or Crash).
- Stay at the rear of the squad, and when you notice incoming aliens on your scanner, drop a mine to take them out.
- When defending an area, litter it with mines!
- Keep your distance on screen from your mines. If you run away from your mine and it kills an alien, that kill will not count towards the achievement.
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