With our distraction set up it is time to make our move against our well secured foe. But before we really get at Karajan we have to take out his lieutenant Kelly, the man who personally lead the attack on Mark's ninja village.
I quite like that Kelly is a puzzle boss, you can't straight up fight him, you can't even stealth kill him without disabling him first. It felt good to drop the light on him and I am actually glad there isn't an option to let him live, the entire context of the game is that you are a ninja and complete pacifism doesn't make sense here. A stealthy assassin that only goes after their target and key figures in their power structure is definitely a trope that you can play you instead.