InFamous: Festival of Blood
14 Achievements
5-6h
Bleeder's Digest
Discover all of Mary's Teachings.
20.8%
How to unlock the Bleeder's Digest achievement in InFamous: Festival of Blood - Definitive Guide
Mary's teachings are found in the same manner as Canopic Jars, except you're looking for glyphs (like in Assassins Creed). They serve as the games Dead Drops. While holding you will see arrows. They can appear on the ground, on the sides of buildings, roofs etc. Follow these arrows and they will lead to a glyph, and unlock one of Mary's bizarre readings. After finding five, you will receive the upgraded radar. This will make finding teachings and jars much easier.
Also here is a map for the teachings/jars (thanks to robpoole).
NOTE: Glyphs stating "Bring the Humans Here" are NOT teachings. These require you to free the encaged humans, which is totally optional.
I will also note that having found 3 entries, you get a new opportunity that allows you, when using vampire vision, to see on the map all the hidden arrows to the entries, as well as vessels with blood.