In Green Run, pacify at least 10 zombies with 1 EMP.
The Lights Of Their Eyes is an achievement/trophy in Call of Duty: Black Ops II. The player must pacify at least ten zombies with one EMP Grenade in Green Run. This is arguably the easiest done as it can be obtained by collecting a group of zombies around the player and throwing an EMP Grenade in the middle of the mass.
This achievement, along with Don't Fire Until You See, is a reference to the famous quote "Don't fire until you see the whites of their eyes" from Colonel William Prescott at the Battle of Bunker Hill.