Black Rock Quarry Control Point. You want to start at the Quarry Entrance. Eventually youll reach a doorway on the fourth level which leads to a.
Black Rock Quarry There is a hole between some rocks at the entrance of the Black Quarry mine. You can levitate through a hole or smash a forklift through the wall to reach a shaft. As soon as you get there via the control point avoid the two Astral Spikes a head.
There will be a level five security door up here and through it there will be several platforms to levitate up.
Now head to the centre of the quarry and take out the Hiss occupants. Best way to describe it is that it isnt a host its just a small ball of hiss surrounded by a cluster or rocks. Hiss Corrupted Thomson is in the Black Rock Quarry itself. After that go straight towards the Black Rock Quarry.