This achievement requires the use of the Judith's Tombstone, or the Tombstone Piece add-on for Michael Myers. Both these add-ons enable you to instantly kill any survivor when you reach Tier 3 Evil Within, though Judith's Tombstone does not drain the evil meter when a survivor is killed in this way and is thus the better choice.
While it can be used on its own, it is highly recommended to combine the Tombstone with a Fragrant Tuft of Hair. This will require an immense amount of stalking before reaching Tier 3, but once you're there, it never expires.
With both these add-ons equipped and Tier 3 reached you will be able to instantly grab and kill survivors, even when they are at full health.
Perks that aid with this achievement:
Hex: Ruin - To buy you more valuable time to fill your Evil Within meter.
Play With Your Food - To negate the slower movement speed of the Tombstone.
Brutal Strength - To keep up with survivors for longer and thus stalk them longer.
Monitor & Abuse - For stealthy approach, thus enabling more stalking.
Remember, with these add-ons equipped your goal is not to sacrifice the survivors, your goal is to kill them yourself. Therefore your perk build should not be based on attacking, hooking or even sacrificing the survivors at all. It should be based on stalling for as much time as possible to fill your evil meter.
The achievement will unlock once all 4 survivors in a single trial have been killed by your hand. Note that certain perks that also allow you to kill survivors, like Devour Hope, and moris do not count towards a kill for this achievement. It needs to be done with the Tombstone.