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Light is terrible!!! I would call it a crutch for Orcs; in fact, it's somewhat unfair that Dwarves have magic, but Orcs don't.
I would level up Ingvar with: 1) Defense (sturdiness, defensive skills + readiness) - this is a very powerful combination! Why don't I take Battle Defense Proficiency? Because I'm not relying on the resurrection rune, but on the resurrection spell.
2) Light!!!! (take the perks!!!!)
3) Education
4) Battle Spirit
5) ATTACK!!! Impact, offensive skills!!
This tactic is only suitable for battles against ORCS, and it's very effective (otherwise, you need to take Luck!!!)
The best hero is Ingvar - he is the best Dwarf hero (I hope no one will argue with that???)