So this retroactively turns all the notes that were optional in the base game into collectibles. Seeds of Evil also has notes that must be collected for this.
Notes usually show up as a soft golden glow under your flashlight.
If you don’t know which notes you do or don’t have, take a look in your backpack (any character on the Equipment screen, the backpack is shared). They’re out of order so you might have to do a checklist.
Notes in Seeds of Evil:
WTF Daniel? - Mausoleum of Suburbia in a ruined house, ground floor
Volts Rumor #1 - Ark Outskirts, behind the elevator to the Ark (note, weapons and enemies won’t spawn until Pripp offers a side mission for said area, same goes for other Volts Rumor notes)
Volts Rumor #2 - Under Ark, in a house, ground floor.
Volts Rumor #3 - The Last Stand, ground floor of the building with the named Shaman boss.
Fed Up... - Water Risers, on the ground over by all the tanks/APCs
Goran Note #1 - also Water Risers, near one of the bridges on the ground
Goran Note #2 -The Under Ark on top of a car that has a ladder to climb up
Goran Note #3 - The Frozen City, along a wall of a ruined building right before a path down a hill. You should see a building next door with moose antlers mounted in the corner.
Blockchain Massacre Challenge - Hall of Electric Coffins, on the ground in a ruined building that has old arcade machines in it.
We Have Left - Call Us! Dad... - Valley of Steel, ground floor of a building.
Friends Become Enemies - The Last Stand, top floor of a ruined building (there’s a hill so one can enter the top floor without climbing on one side)
A Great Opportunity! - Garden is Jyko, the final area. It’s in the main building, ground floor, near the pods that produce more enemies.
I’ll have to update this with the much longer list of main campaign notes, stay tuned...