I tried sinistra+infiltrator affinity combo called Shadowdancer. It says that if you kill an enemy shortly after marking them with ghostwalk they will be raised from the dead to fight for you.
But I cannot mark anyone with ghostwalk! I tried all 3 levels of ghostwalk and still can't mark anyone.
I seem to only move forward and turn invisible - there is no targeting.
I'm playing the Steam version .ver 1.5.7.0