you can just go with 100 health and 0 armor and still kill everybody as an assassin
But you shouldn't have to sneak your way up to the top. ARE YOU PLANNING ON SNEAKING UP ON ALDUIN?!
He's right, you die way too easily. I think I'm playing on the second hardest difficulty, which is fine on combat, except that sometimes some ridiculously powerful character comes along and kills you with literally 1 hit. I'm not talking about an Elder Dragon, any Orc with a dwarven hammer will crack your skull in 1 hit if you're not over lvl 30!