There is an Act 5 achievement called "Historian of Westmarch" which is a bit difficult to get but I finally got it this weekend after many tries.
The issue is that there are two particularly difficulty series of lore that need to be found, "The History of Pandemonium" (parts 1-4) and "The Discovery of Sanctuary" (parts 1-3). They can both be found in the
Battlefields of Eternity.
However, there are some restrictions:
"The History of Pandemonium" - Found on "Angelic Scrolls" (Spawns 1x per game)
"The Discovery of Sanctuary" - Found on "Ancient Corpse" (Spawns ~1 every 3 games)
Hopefully this helps anyone suffering a OCD meltdown because they can't get the achievement.
-420
