Born in Darkness Part 3
Defeat Teraks's platoon near the Crux of Darkness in Eternity.
The Skeleton Key is almost ready. The Stranger believes one more boost of energy from combatants near a Crux should do it. Find Teraks, Salvation Elite Captain and eliminate their platoon.
"Let's cap it off with a bit of Ether. Another of House Salvation's 'elite' have taken residence over in the Exoscience building. Put an end to it." —The Exo Stranger