[quote=@Sigurd]
Oh, what I meant is that he can't be simply broken like any old bone you may find. He's got the physical resilience of a warrior, not a frail skeleton, if that makes sense. I am pretty sure Kodor could obliterate him if he isn't careful. :-)

And as for the magic killing him, I had something like this on my mind: If you crush him physically, let's say snap his spine or decapitate him -- or anything of the sort, really -- he remains alive, just useless and pretty much dead in the sense that he can no longer continue the RP, but his soul is still trapped in his broken skeleton and is doomed to remain like that forever. He would remain alive in that, should I say poetic sense, which doesn't make him invincible or overpowered. A powerful spell can destroy him in both senses -- obliterate his body and cast out his soul from it, killing him for good.

Is that better?
[/quote]

I'm gonna throw out a suggestion in case you want to use it; it's how I like to do sentient zombies but it'll work better if you wanna make him fleshy instead of a skeleton.
Typically undead can't feel pain, which is actually a huge advantage in combat. It's why when Kodor goes berserk, that's one of his boons; he just ignores pain and fatigue and injuries and fights until he can't even move. As an undead, you're probably also resistant or immune to disease, poison, and hunger.

Another thing you could do instead of mere durability is, not regeneration exactly, but something similar. Wolverine style regeneration is hard to keep track of without a system, and also relatively easy to abuse to where you inevitably have a guy who can get stabbed in the chest and say "lol i heal", thus negating any semblance of danger.
What you [i]could[/i] do is have him get hacked to pieces, but then sew his body back together later. This gives him a certain form of regeneration that gives him a very unique advantage over a living warrior, but is still limited in that you don't have time to pull out a needle and cord during a fight.
Limbs can also be mangled to the point of uselessness, like if his arm got crushed, burned to ash, or chewed up by a large beast. So what do you do? Go find a fresh corpse, lop off his arm, and stick it on your stump.

And on top of this, you still have ways of being disabled or killed. If all your limbs are disabled or your head gets chopped off, then you'd be helpless until someone patches you up. And you can still have a method to get perma-killed, which with undead is typically destroying the head or heart.

I've been mulling this sort of thing in my head for a while, but I always forget to play a ghoul when I have the chance.

Also ImportantNobody, I'm probably gonna throw out some lore ideas in a short while, specifically about the actual culture and tech, and probably a bit on magic. That way the setting is a bit more cohesive and clear, but we can still leave room for adventuring. I'll make a post about that in a short while.