Complete the indicated task to unlock the achievement.

Achievement	How to unlock
All Birds With One Stone (11)	Complete a level using only one rock.
Destroyer of a Thousand (13)	Destroy a thousand enemies.
Four for One (10)	Destroy four enemies with one throw.
Golden Five (16)	Gain five extra rocks during a level.
Grenadier (14)	Complete all Grenade Levels.
Head Shot! (11)	Hit the King with a rock three times during a level.
Headache (14)	Hit the King with a rock three times during a level.
Kingslayer (14)	Kill the King.
More Than Perfect! (14)	Complete a level with one rock and gain more than one extra rock.
Secret Moustache World (18)	Find and complete the Secret Moustache World!
Six Pack (13)	Destroy six enemies with one throw.
Stash of 'Stache (16)	Complete the Stash!
Thousand Throws (13)	Throw a thousand projectiles.
World Ender (16)	End the World.
You Rock! (16)	Complete all One Rock Levels.