Hey guys and gals! Here is my 100% Achievement Guide for Infliction!
Towards the end of the game, you will be tasked with finding a candle or lighter to burn picture with.
Do NOT do that, instead, just wait for another sort 5-7 minutes only this time turn ALL LIGHTS OFF!
Thats right, including your torch, we want the ghost to catch us this time as she possesses us instead of kills us.
So walk around, all lights off, wait a bit and you hear the familiar radio crackling, heartbeat when shes closer etc.
Once she does possess us, we can either kill her by looking at a blue painting with trees in it (which is in the hallway leading to the kitchen) or turn on a light.
For easiness sake, try and stay around the hallway area so once she does indeed possess us we cna get up and look at the painting straight away for this achievement. But as i said, either that or turning on a light works.
Go to 49:00 in my video to see where and how this unlocks.
Hope This Helps!