A short and simple guide directing to the locations of the six horde events in Hellpoint that are active during the Black Hole Hour.
Guide to Six Black Hole Hour Hordes
Sohn District Horde
From the corpse pile Breach, go outside and head left. Past the first patrolling Daemon is a large gate with a smaller blue door beside it, inside the door is a button that will open this gate. The horde event will be inside this gate.
Port Issoudun Horde
Just outside the vault door that leads to Ozyormy Gojira, Master of Puppets, is a room with a hexagon shaped hole in the floor. This room is where the horde event will spawn during black hole hours. Completing it will raise the hexagon shaped elevator in the center, rewarding you with a couple loot cubes.
Arisen Dominion Horde
This horde is currently broken, but is at the top of the staircase leading into the Arisen Dominion from the Embassy entrance. It is just before you enter the main door, leading to the Grand Gallery.
Alma Mater Atrium Horde
Alma Mater Atrium
Near the Union Park Breach, just before the Consumer Boss fight. (Where the Golden Loot Cube is located pre-Consumer fight.)
Arcology Underside Horde
Inside the main area, somewhat near the Arcology Underside - Central Mall Breach. If you're here during a Black Hole Hour, it's hard to miss.
Ikari Walkways Horde
From the Crashed Tram Breach, cross the bridge leading towards the Artillery Boss Fight. The Artillery boss fight will be down the right path of this walkway, the horde will be at the end of the left path. (Thank you u/carthoris26 for fixing this.)