However, it’s also a weird quest because you can’t actually get your father’s word back, nor will you ever get to kill Markvart von Aulitz. You’ll never even encounter him in person (he is only shown in one cutscene during the first main quest). Long story short, just play the main story line and this quest auto-completes at the end. The reason why you do anything is to avenge the death of your parents and punish Markvart von Aulitz, the one responsible for their death. Basically, Vengeance is your main task, the reason why you play all the main quests.
