OK SO, the strat is, it only kills you once you're using the flashlight. Everytime you enter the stairs room, enter it pointing your flashlight directly below you whilst standing still. The flashlight should freeze it in place and kill it after 3-4s!(the enemy sadly respawns everytime you enter the stairs room, so for now, since it spawns below you once you enter the room from the right side, thats the current way to sneak past it)
AND THANK YOU SO MUCH FOR THE FEEDBACK SO FAR!! It really means a lot to us!!