Heroes for duels.

Well, as far as I know, the game assigns random attributes to enemies, just like it does with other things. I know one thing for sure: in AdvMapHeroShared, there's a line called PresetMinimalAtributes. You can configure 40 knowledge points there without any problems. P.S. Somewhere in the advanced editor (i.e., in the data files), there's a resource called DuelPresets (or just Presets); it probably contains these settings.