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I remember when I played on an easier level, something would at least appear on the scale, but on a harder level, the scale is completely neutral; it doesn't move towards either Blood or Tears. Even though I didn't let anyone go, I attacked all the neutrals, but the Blood scale didn't even move. What is this? How do I develop these paths? Can you advise me?
You're probably leveling up the wrong hero. Only the main hero's Blood and Tears increase.
In scenario maps, Blood and Tears increase quite quickly, perhaps even too quickly. But in Campaigns, they increase too slowly, in my opinion. Tears increase when you allow some neutrals to join you. Also, they increase when you use spells and abilities from the Tears group, such as healing, regeneration, summoning elementals, etc.
Blood, on the contrary, increases when you kill those who want to escape or join you. And when using Blood spells and abilities - life drain, ranged attacks, if you have taken abilities that increase damage from ranged attacks, bolt, chain lightning, and other spells that deal direct damage.
Blood and Tears are one of the most important features in the game. The higher your reputation in one or the other, and the higher your level in them, the stronger (or longer-lasting) the spells and abilities of the corresponding path become. So, it is more than worthwhile to level them up. Again, levels in them sometimes give the hero simply amazing abilities.
