After witnessing what he had done, the elves did not want to make eye contact with Arthur. No one could blame them for that, as the thing in front of them looked terrifying — their worst nightmare.
Arthur knew he could not last long fighting, so he chose to keep going while his body still responded. So he flew toward them, wielding his spear, and pierced it through some of the elves before they got their senses back together and retaliated.
More spells went in Arthur's direction, and the remaining part of his plate armor was destroyed, leaving his body unprotected.
"Hahaha, die demon. Do you think a small demon like you can stop us? We practice dark magic, and there are many worse things than you!"
The elves returned to reality, realizing Arthur was hurt, and they still had the numbers advantage, so there was no reason for them to act like afraid kittens.