Dishonored 2 – The Lovers Trophy / Achievement Guide – Link 2 characters with Domino just before one kills the other [Bronze / 10G]
CAN ONLY BE DONE AS EMILY KALDWIN!
You must buy the skill “Domino”. Only Emily has this skill, Corvo doesn’t. You can select your character at the start of the game after the first few cutscenes.
Once you have the skill link two enemies with it (hold L2 / LT to link them). Now choke one of them (R1 / RB). While choking one enemy the other has to attack you. He will hit his choking comrade in the process. This will kill both of them instantly. Since the attacking enemy is linked to the one being choked he essentially kills himself.
The first chance to do this is in mission 2. You can do it anywhere after this point.