I got the main part of the fight from Little Nightmare's Final Boss Fight, wher eyou gotta force this lady to see herself in a mirror a fw times while also avoiding her. The way mine works is the Singularity is very bright, but will stay dark until Luna is really close to it to make it a Jumpscare. You have to have a mirror and flashlight so you can be able to show the Singularity itself when it brightens so the light reflects back to it and hurts itself. DO this 5 times and the boss fight is over