This page of the guide covers the opening section of the Mage Origin story. It will cover what happens in the Fade and give the correct answers to the riddles that the Sloth Demon asks. It will also cover the first section in the Mage Tower after the Fade part is complete, called 'A Mage of the Circle'. The Mage Circle is also where you'll first meet Duncan, a Grey Warden.
Continue through a side door (Map Location #4) to head back outside to the battlements. Go along the battlements and defeat the Darkspawn. Re-enter Vigil's keep and you will emerge on the other .