For every 6 wounds inflicted on a unit that contains more than 1 model with 3 or more wounds, score 1 point. Units with the SWARM keyword do not count towards this mission.
If I have two units of two spawn (4 wounds each) can my opponent score 2 points if he kills 2 and 1 or does he need to kill 2 and 2? In other words does this rule keep the points earned separate per unit unlike Titan Slayer?
Based on the wording of Titan Slayer I would say that he needs to kill all four to earn two points, but I wanted to be absolutely certain.