Well, I finished all chunks for my test level. I placed the corpses and treasures, and now I can do testing how it works. It was boring and tedious work.
Now I need to decide what monsters I will be using. I think there should be wild animals: wolves, bears, jackalbeasts, moles, warbeasts, bats and others. Besides here may be encountered scouts (Events with sturmbeorns and goblins).