Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Boulder Builder	Build 1000 Rocks.
Ecological Disaster	Absorb 1000 trees.
Koth Killer	Absorb 100 Koths.
Sisyphus	Git hit by the Koth 10 times on one level.
zzzzzzzzt	Get hit by the Koth 1000 times.