As you wandered the almost endless facility of Hadal Blacksite, having met Sebastian Solace just a few doors ago, you enter the next room and the lights flicker.

You figured its just an Angler or Angler variant, but no. As you hide in a closet, you hear howling. Unnatural howling. Then the lights furiously flicker as darkness is peered through the small gap of your closet, with a cluster of phantom-like eyes. It knows your in there, and its trying to get you out.