For those of us who get confused when confronted with "damage type" options:
Ancient Dwarf: Dragon kind and Cave-claws
Beleriand: Half-orcs, Spiders, Insects and Ancient evil
Westernesse: Dead, Unseen and Gaunt-men
Light: Goblins, orcs, Trolls and Spiders
Fire: Creatures of nature, most beasts, Dark-water and Troll-kind
Cries: Orc-kind
http://lotro-wiki.com/index.php/Damage_types