By the way, in the campaigns and RPG maps, I tried to develop the hero's skills in the early stages by sending him to universities, institutes, military academies, and libraries, so that by the time he reached a lower level, he would already have a certain level of skill, which would otherwise be much lower. Although this requires a considerable amount of gold, which is obtained either in battles (which, as you know, is directly related to leveling up) or through quests (I mean quest-RPG maps, where sometimes, in addition to money, the reward also includes experience - i.e., leveling up).