The Ogroman is a giant, heavily armored B.O.W. that appears in multiple campaigns. Its primary weak point is the large, glowing sac on its back. To expose this, you'll often need to shoot its legs to make it kneel, or use environmental hazards like exploding barrels. When it's on the ground, run behind it and shoot the sac. It has powerful ground slams and charges, so maintain distance and dodge. In Chris's campaign, you can use vehicle-mounted turrets for a more direct approach. Teamwork is crucial for distracting it and exposing its weak point.
