RPG I: The Necromancer's Revenge

I'll head to the Mage Guild and enter a dark alleyway nearby...

You entered a dark alleyway; in fact, all the alleyways in the Necropolis are dark. You see the spires of the Mage Tower in the distance; it's quite a walk. You managed to enter the guild through a secret entrance. To read the scroll, you need to climb to the very top. What do you do?