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Yesterday I finally finished this map. And, like many others, I had some questions.
2. It's just a neutral building, not connected to anything. Such things are rare on maps.
3. It would help you instead of Kilburn if your hero developed along the Blood Path.
Regarding the killing – all the answers to your questions are in the Necromancer campaign.
Всякого, кто "знает как мне будет лучше", я записываю в блокнотик в список "расстрелять в первую очередь".