For those who have beaten the game and have no clue what the blood writings mean... Most of them are explained here:

http://www.computerandvideogames.com/article.php?id=175552&site=xbw.

Awesome game.

- Will

Wow, OK so someone put a LOT of thought into this game. Probably will confuse some people (not here but somewhere) as they mix some real life events with myth and in came "confirm" the events. Every conspiracy theorist should play this game :).