Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Back to Bed With You	Knock out an enemy again that was revived from being knocked out.
Cordyceps	Dispatch two enemies at once using a body infected with Toxic Fungus.
Couldn't Do That Before	Disable a spotlight using the Dusk Moths.
Days Long Past	Complete the new Special Edition level.
The Humble Moth	Stun an elite guard with moths then dispatch him.
Well, I Think It's Interesting	Read one of the history lesson developer commentaries.
What Could Have Been	Complete one of the original Mark of the Ninja levels using the Path of Wisdom.