Thank you for your answers. And as I understand it, the speed of completing the game is limited by the last battle in the mausoleum, as there is nothing else to do there :) , unlike the dragons, which are slightly weakened by mummies and death knights (with certain skills and artifacts, and a boring and long battle). Also, I didn't know that luck and soldier's luck are not related skills, as even with a successful hit, a death knight might not be killed.
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