Invincible Marines
From Halopedia, the Halo wiki
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.
From Halopedia, the Halo wiki
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.