The Ninety-Niners, more commonly stylized 99ers, are the primary antagonists once you enter Marin.
Extremely tall and lumbering though capable of a short rush melee attack if an ark hunter gets too close. Uses a two-shot detonator. Vulnerable to headshots.
Support robot capable of healing allies. Can be damaged to the point where it becomes “enraged” emitting a red glow and charging ark hunters for a suicide explosion. Seen with other enemy types in certain situations.
Tall and wearing a protective faceplate these enemies wear distinctive yellow armor. Very vocal, will charge to melee or shoot from a distance. Vulnerable to headstots.
Basic 99er enemy that will seek cover, can have a standard rifle or shotgun which they will swing for a close melee attack. Vulnerable to headshots. Also Claimjumper and Demolitionist?
Boss of the cop-op map “The Motherlode”, this is the largest humanoid enemy in the game. Initially two weakspots appear on its knees. When those are destroyed four power nodes appear on its shoulders. After one is destroyed it will use a nearby station to heal but this can be interrupted. After all four nodes are destroyed a final weakspot will appear on its chest. Charges, stomps and swings a hammer for melee, and has a number of energy attacks that are telegraphed by the positioning of the hammer.
Small fast-moving enemy that shoots fire that will damage and spread to nearby ark hunters. Vulnerable to headshots it also has a pack on its back that is a weakspot. When the pack is damaged the Smelter will be set ablaze and it will run in circles for a brief period.