Complete a level using only one rock.
Hit the King with a rock.
Hit the King with a rock three times during a level.
Destroy a thousand enemies.
Throw a thousand projectiles.
Destroy four enemies with one throw.
Destroy six enemies with one throw.
Complete a level with one rock and gain more than one extra rock.
Gain five extra rocks during a level.
Complete all One Rock Levels.
Complete all Grenade Levels.
Collect all diamonds in Hall of Diamonds.
