The Pathogen Harbinger is a high-level threat in Aliens: Fireteam Elite 2. It might be the most disturbing of the Pathogen-mutated enemies in the game, with a twisted body that has no head, but is defined by a big inverted mouth in its centre and several arms with hook-like tips instead of hands.
This pale monster chases individual players down and attempts to immobilise them with wide grapple attacks. From a tactical perspective, the Harbinger behaves a lot like the Xenomorph Drone, though it may be a more unnerving sight.
Thankfully, Harbingers aren't heavily armoured even if they can absorb more damage than regular enemies. Well-coordinated squads should quickly spot and focus fire on them before they can neutralise players and leave squads with one Marine down and open to swarm rushes.

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