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Xanthe creates new Blood Guards - who are then trained by veteran soldiers. Dealing with these instructors would rattle the vrakhiri regime.

Quest stages of Xanthe's Blood Guards: Teach with Pain

1. Clear out Xanthe's soldiers's campsite

Getting rid of the soldiers here should hamper Xanthe's efforts to train more Blood Guards.

2. Ending

I've managed to eliminate one of the Blood Guard instructors. Hope new recruits will be weaker for it.