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Or use scripts, but this will only work within the map. Attach the HERO_LEVELUP_TRIGGER, and in the function it triggers, add a check for divisibility by three (Level+1), and if it's true, increase the hero's knowledge by 1. But if you want to create a hero for the game as a whole, then yes, familiarize yourself with the principles of how game mechanics work in NHF.
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Or use scripts, but this will only work within the map. Attach the HERO_LEVELUP_TRIGGER, and in the function it triggers, add a check for divisibility by three (Level+1), and if it's true, increase the hero's knowledge by 1. But if you want to create a hero for the game as a whole, then yes, familiarize yourself with the principles of how game mechanics work in NHF.