- Take the elevator down to the Basement.
- Kill the Abomination Master to loot the Key which opens the Cellar Door to the Library on the 2nd Floor.
- Take the elevator up to the 3rd Floor. Kill the three (3) Abomination Warriors and one (1) Abomination Summoner, then walk over to the Abomination Master on the table to the left and kill him to loot the Key to a chest in the hidden area of the Library.
- Take the elevator down to the 2nd Floor (Library). Speak to Erlking in the back (choose either speech option) AND Mindread him so he mentions the book Gothe's Ballads.
- Find Erlking's Bookshelf in the corner on the other side of the room (it's near the wall with some flags), then search the bookshelf and choose "Gothe's Ballads" (bottom option). This will open the hidden area behind the wall with the flags.
- Open the chest on the desk in the secret room to find the Soul Forge Contract book that reveals the Demon's name.
- Make sure you finish everything you wanted to do in Broken Valley and Sentinel Island before continuing.
- When ready, take the elevator to the 4th Floor.
Extra: 1875 exp or 440 gold
Leads to: Laiken in his Lair
You can Mindread Sassan when she first gives you this quest (near the elevator on the 1st Floor) to learn about Erlking's Writings. You can find this book on a desk in the Library on the 2nd Floor. Read the book after looting it to gain two (2) stat points.
On the 3rd Floor (near where the Abomination was) against the back wall is a candle. Light it, then go to the other side of the room and light the candle over there to reveal a hidden room with a chest.
After you finish this quest and proceed to the 4th Floor (before you summon the Demon), you can Mindread Sassan for 1400 exp + one (1) stat point. Then after the Demon retreats you can Mindread her again for 1400 exp + one (1) stat point.