The result of half an hour of work is shown in the screenshots; good luck, Ashi, and to all of you, esteemed mapmakers!







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You select the "Character" option in the window and choose the model of a knight; it already contains information about the model and animation set.
Thank you very much, it seems to have helped, but now I'll have to reinstall Heroes because I messed something up with the files XDD
That's how an anecdote turned out)
Everything is written in the manual. Add the animation with the code name name = rangeattack to AnimSet in HeroCharacterArena, and in BasicSkelAnim, choose one of the existing animations (screenshot in the manual). The Archdevil also doesn't have a melee or ranged attack, so the manual describes how to add it.
P.s. Textures are responsible for displaying the model, not for the absence of animations.