Hand of Khaine - Bodyguard's Sacrifice

So then, your final trial awaits. Khaine must smile down upon you, but this task is not for his glory, for you have done enough to stay his blade, rather for my satisfaction. You see, the greater the heart, the greater the relish in eating it. I did dearly love my brother, and never shall our two hearts be parted. However I crave more, and unless you want to offer up your heart, another will have to take its place. There is one whose axe has turned my blade more times than I care, Thronadir of Lion’s Mark, and killing him would also open a window for my sisters and I to make an attempt on Finubar’s life. Find your way into the Altdorf Palace. You cannot barge into the Palace, no that way is not open to us, nor would any assassin worth his mettle pursue such a rash course of action. Our spies in Altdorf claim a hidden route below the Altdorf Library goes beneath the Palace and can get you where you need to go. Bring me Thronadir’s still-warm heart and you’ll have your reward, and your life.

Find a way to sneak into the Altdorf Palace and assassinate Finubar Seafarer’s guard and friend Thronandir of Lion’s Mark, a lieutenant of Korhil. Return to the Druchii Spy one final time and make haste back to Raetha Blooddaughter with the still-warm heart before it cools.