How do you stun a High Eternal?!
I did three battleship runs so far.
First one I accidentily killed by a heavy's salvo. My bad.
Second one I wittled down to ~60HP, before he killed (took over) all relevant team members one by one. (After the sixth loss in that one room, several killed by their own people, I have to admit I save scummed. Killed the Eternal instead and survived with only 3 dead.)
Third one was going splendidly, until the moron came out of the door, shot at me, and got killed by reaction fire.
I never have the opportunity to stun him. Smoke, stun grenades, assaults with electro rifles...
Any more good advice?
PS: Thanks! The very helpful thing I did not know (because I didn't read properly) was: Colossus Armor's melee attack stuns! Lost another sniper colonel, but finally got the mission.
It tanked three (3) stun grenades, two shots with the electro rifle, but fell after a few rounds of colossal slappings.