Kinglink254,901 Locked 02 Jun 2015 02 Jun 2015
Have both Blink 2 and Stop time (not just slow time) and then blink up and stab the Tallboy.
Stop time means EVERY attack is an assassination, and Blink 2 is needed to reach the height of the tall boy.
If you don't waste runes you should have enough runes around Lady Boyle's party, if not you can also do this easily in mission 8 if you have the runes for it.
Blink 2 and Stop time is uber important in the ghost run throughs, so you should have the runes there.