First playthrough of the entire series, and so far my favorite part of Assassin's Creed 2 is using the Internet to decode the coded strings in these Eye-Glyph-file-unlock things. Also: Are the
How To Complete All The Glyphs In Assassin's Creed Brotherhood
Assassin's Creed II] The Bunker glyph puzzle rules : r/assassinscreed
Assassins Creed 2 Feathers Locations Tips and Achievements Guide - Page 3 of 5 - Video Games Blogger
Steam Community :: Guide :: Assassin's Creed II Glyph puzzles (from Gamesradar.com)