Good Luck going for this achievement because you'll need it. Not only do you have to play super super stealthy all game but you also gotta leave your teammates behind.
I ran Sole Survivor, Deja Vu, Adrenaline, and Left Behind (You can honestly change this one out it wasn't much help). I also ran a flashlight so I can at least interact with the killer and annotated blueprint so I knew where the hatch was more then likely.
It was Midwich killer Animatronic, game was going alright right up till after the 4th gen popped. We all had 2 hooks each. I decided to stop trying and go for this achievement, one by one my teammates fell down and last left me. Midwich is nice because the hatch spawns at the bottom level 9 times out of 10, and I had a top generator. To the generator I went, I accidentally popped it right at the last second and was like this is the end.
His heartbeat grew louder and the gen finally popped. Luckily there was an exit door right below me and a hole to fall down so I take the fall. I open the door about half way before he caught up to me and threw his axe into me, desperate I start a small loop near the door.
I click my flashlight at the gate and then down to indicate me. No response and around once more. I click it again at the gate hopping I'll get something... and then a miracle. He stops dead in his tracks, I slowly go towards him and drop my beloved flashlight and he nods. I open the gate and rush out trying not to anger my metal friend.