Hmm... Not sure 13 year olds are going to relate much to the pain of losing a partner. Or, a child. Possibly, not even a grandma.
The altar of human sacrifices, the undead walking around and whatever he did to curse this land... sound more like Diablo aesthetic. About every other place in every diablo game ever, lol.
Even the owner is some guy, in questionable state of alive Who. Will. Just. Not. Learn. Stay dead, god damn it!
To add insult to injury, we're destined to kill This Guy. And his boss. And his boss's boss. During all this, we're the last people alive protected by o̶u̶r̶ n̶e̶p̶h̶a̶l̶e̶m̶ b̶l̶o̶o̶d̶ some bauble. Where did o̶u̶r̶ b̶l̶o̶o̶d̶ the artefact come from? I dunno.
It's impossible to write a villain who is both personally scary and a man child, yes. For some reason, we seem /also/ destined to meet people with about every personal motivation twistable. My guess is, corruption will be a big theme. Particularly, people are twisted Into a sort of... shadow personality? Kagha is a mockery of the protecting mother. Ketheric... a paladin, or perhaps a cleric. Maybe the selfless hero. He's a man who sold himself piece by piece after all. Thus, the worst kind of self-less.
You could also say neither was ever a protecting mother or someone serving selflessly. It's the story in their heads vs. the complete reverse... their actual effect on the world.
