There are lots of people struggling with Teredor in Mithril Mines. Here is a video of a high effiency way to approach Teredor without wasting time to kill eggs.:eek:
http://youtu.be/qKdQ53ol34Y
This is a daily quest that gives 20 loyalty deeds, and you can buy a R weapon for 125.
You will find screenshots with the rewards from this quest here: Remember to use translate korean with Google translate
http://www.inven.co.kr/board/powerbbs.php?come_idx=383&l=1406