This is really great idea. Who wouldn’t like to become a ruler in his own kingdom where you control everything and sends his army to experience some adventure and pillage. Guild Dungeons is really an interesting project.
I didn’t know what to do in the beginning but the whole principle is simpler then it looks. At first, you should build your city/kingdom to have enough resources and material. The next step is choosing your heroes and creating army which can be sent into the whole world. The game offers much more. There is possibility to cast spells, create items and trade. The complexity is huge so there are some unbalanced things as waiting for resources.