Albeng
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The wolves needed to complete the hunters' quest are located in the northern part of the map, well hidden under the trees, but they are easy to find if you highlight the objects on the map using Alt. For the quest with the shipyard owner, other packs of wolves are generated at the opposite end of the map; killing them does not count towards the hunters' quest.
The human spy is a shaman, standing next to the ore mine in the orc town. She blends in a bit with the surroundings, so highlighting the objects also helps.