Ormulf Worm-hunter, impressed with your selflessness, has offered you a reward for slaying ice-drakes after all.
'I cannot keep my mirth hidden beneath my beard any longer -- you have passed my test, ${PLAYER}! I did not think to find one so selfless, but you have proven your worth to me! To slay so many ice-drakes, without hope for reward...you are an honourable ${RACE}, that much is certain!
'Unless...you assumed I would give you a reward anyway? Surely that isn't the case, is it?
'Bring this crate of pick-axes to Wegeir in Thorin's Hall. He will provide to you the reward of which I speak, and he will receive the pick-axes he is due. If I could leave Othrikar I would deliver them myself, but you know how it is. I left with him several choice items of mine, and any of them would be a suitable reward for you, my honourable ${RACE}!'
Wegeir is somewhere within Thorin's Hall.
Ormulf Worm-hunter has been impressed by your selflessness and asked you to deliver a crate of pick-axes to Wegeir, who can give to you your reward.