On the level Outskirts, must be Heroic difficulty, at the part: "A Day at the Beach" you see Marines in a Warthog. Get them out of the Warthog and if you try kill them, they won't die.
On the level Outskirts, must be Heroic difficulty, at the part: "A Day at the Beach" you see Marines in a Warthog. Get them out of the Warthog and if you try kill them, they won't die.