For The Elder Scrolls V: Skyrim on the PC, a GameFAQs message board topic titled 'Companions quest glitch? Have you got any tips or tricks to unlock this achievement?Add a guide to share them with the community. Warning: I don't recommend reading the spoilers unless you have already finished or have no interest in finishing the Companions questline. The other members of the companions are there. Listen to them speak for a while and one of them will tell you that they need to return Wuuthrad to Ysgramor in order to continue. Down some stairs there is a crypt, three Companion Ghosts will spawn here.
You will arrive in a room with coffins propped up on either side. Continue down, and follow the path around until you are heading west into the next chamber with several Enter the room and turn left and you will come to another webbed doorway. When they are done with, head to the end of the room (where two of the ghosts spawned) and turn right. Exit to the left and go down the stairs until you get to another large water-filled room. I have a bug, I really dunno what to do, I'm almost giving it up, pls help. Speak with him and he will eventually tell you to throw a Glenmoril Witch Head into the fire.
This will release the wolf spirit of the brother wanting to be cured. When the spiders are dead, there will be a barred door on the right.