Thank you for your answers. Damn, looks like I´ve done everything wrong. My fighter really had been intended to be two-weapon/swords in the beginning, but someone had given me the apparently bad advice, that 2-weapon-fighting were a weak skill in Wizadry 8
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Now I´ve already got Shield and Axe learned up to 50+. Is there any kind of tool with which a character from a savegame can be modified? Otherwise I´ll delete him and start to build a new lvl 1 fighter ...