The Terror of the Crypt quest is one of the first quests you will go on. It starts in the Mileth Tavern, and you are required to have two mates with you, within your insight range. Ranges go by every ten levels. 1-10, 11-20, etc. You and your companions will speak with the beggar in the tavern, and he will send you on a quest to kill a beast, to rid him of his nightmares. The beast will be in one of three special rooms, in the crypt, Abel, or Eastern Woodlands. When you finish the task, you will recieve experience and this legend mark.