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The memory book contains all the lore pages you have collected. You can access the memory book from the main menu, or by pressing L (by default) in game. Lore pages contain information about the game world and its inhabitants. Each lore page also allows you to see the details of one achievement.
Obtaining Lore Pages[]
There are three sources of lore pages:
Most bosses will drop the lore page describing them the first time they are defeated.
Whenever you encounter a new text screen (e.g. due to completing a chapter you haven't completed before) you will normally be given a lore page with a copy of the text.
