Discussion about Dungeon (Dark Elves).

Leadership is a good skill for the Sylvan faction, but not for the Dungeon faction. It's not "their" skill, and it's not worth investing in. In terms of education, I only take Magic Affinity. I always take Secret Knowledge.
In Chaos magic, I level up the spellcaster whose spells are available in the guild. Luck is always a good choice; I don't level up anything else (unless the hero is a Warlock, in which case I might try Wizardly Luck).
Is the game in English? If it's in Russian, the Russian skill tree is in the game folder.