Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Cartmageddon	Kill 20 units with a single bomb minecart explosion.
Close Call	Clear a stage with only one life remaining.
Death from Above	Kill a unit by placing a Barricade on it.
Hardcore	Clear a stage with 8 runes activated.
Impatient	Call all waves early on a stage.
Krush Kill and Destroy	Kill 50 units with a single boulder.
Somebody set up us the bomb	Kill 10 units with a single bomb.
Streaker	Reach 200 kill streak.
This is Madness	Kill a unit by pushing it off to a pithole.