Board Thread:Syndicate general discussion/@comment-75.39.190.69-20151128041839/@comment-6517-20151201111105

As Crook has said, you need to, firstly, get both enemies down to a near-death state (slumped over), and then wait until such time that two move to attack at once (as indicated by the flashing health bar). You should then perform a multi-counter kill.