Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Caster Wrecker	...And the Casters fell from the skies.
Greaper Annihilator	The awe of when that drilling sound ends.
Javelin Unlocked	He carried death on a sharp tip.
Orb Unlocked	The skies filled with explosions.
Precision Unlocked	His line of sight, obliterating.
Size means nothing	Defeat a boss without ever being hit.
The Awakening	Where are you? Who are you?