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Can anyone help me? How do I create a hero without a castle so that he doesn't die after a week?
But in general, why do you need this? What's the point of this idea?
Let the hero capture a city and live there.
If the hero is an enemy, then do the opposite.
You need to set "special victory conditions" - "defeat a specific hero".
But keep in mind that "special victory conditions" and "special defeat conditions" do not work together!
You need to set one or the other.