The Blood Pact/Quick guide

Getting started

 * Start the quest by talking to Xenia in the Lumbridge graveyard.

The Dungeon

 * Enter the catacombs.
 * After a cutscene, proceed North.
 * Defeat Kayle. Take his crossbow.
 * Proceed West.
 * Defeat Caitlin.
 * Go south and operate the winch.
 * Talk to Caitlin. Take her staff.
 * Go down one of the staircases to the West.
 * Go South and open the tomb door.
 * Defeat Reese.
 * Untie Ilona.

Finishing up

 * A cutscene will occur.
 * Quest complete!