uhmm I think he's actaully talking about that guy near the beginning. Don't remember his real name but they called him "Big Cheese". What I did is once the fight began I ran behind him and went up that ladder. Just keep nailing him with shotgun rounds until he breaks in half. Sometimes he'll grab you and pull you down from the ledge. Just run back up it if that happens. When he starts swinging from the ceiling, stay up on that ledge and keep blasting himwhen he gets in range. Be sure and have a few health sprays and herbs, too.