Completing the chapters of the Book of the Dead | The Book of the Dead Darksiders 2 Guide

Altogether, there are 40 pages of the Book of the Dead scattered around the game world. They can be found in generally accessible areas, as well as within locations specifically connected to main quests or side quests. Each time you find 10 pages, a chapter of the Book of the Dead is created - you can take it back to Vulgrim and sell it to him (the last tab in the Inventory - the above screen). Here's what the demonic merchant has to offer in return:

• 1st chapter - green Bone Key which unlocks access to a mausoleum in the Forge Lands.
• 2nd chapter - blue Bone Key which unlocks access to a mausoleum in the Kingdom of the Dead.
• 3rd chapter - red Bone Key which unlocks access to a mausoleum in Lostlight.
• 4th chapter - orange Bone Key which unlocks access to a mausoleum in Shadow's Edge.