After you kill Warleader Kaslinot and hail Tsaph, the 4 x Sarnak spawn right on top of him and his crew. They make short work Tsaph and if he dies the mission is a fail. Can only imagine similar conditions on the 6x adds. Bring crowd control. Or skip this mission all together and farm named for easier gear ups.
Warleader Kaslinot has about 35million HP, has a minor AE knockback but didn't catch the name. Probably the best part about the mission. Poofs when he dies, no loot.