There are a total of 7 Diary Pages to be collected in Far Cry 6: Vaas Insanity DLC. Collecting all the Diary Pages unlocks the “Dear Diary” trophy/achievement.
Diary Page #1: We’re All Mad Here 1
It is in “The Compound”, inside the building in which you spawn. Go out from the door on the left side of the weapon armory, and you will find the page on the wall as shown in the pictures below.
Diary Page #2: We’re All Mad Here 2
It is inside a shipping container on the north side of The Compound.
Diary Page #3: We’re All Mad Here 3
You will find it on a corpse on the northeast side of the map as shown below.
Diary Page #4: We’re All Mad Here 4
It is in the area where you go during main mission to pick up the dragon blade piece. The diary page is on a locker in the room below the room where you go for the main objective (See the picture below).
Diary Page #5: We’re All Mad Here 5
You will get it during “Checking Out”. Jump inside the hole, then swim to reach the hotel. Go inside the hotel and pick up the key from the table. Then take the hallway and enter the room on the left side. Here you will find the page kept on a table with a TV on it.
Diary Page #6: We’re All Mad Here 6
You will get this one during “The Balancing Point”. Dive down at the location shown in the picture below. Here you will find an open window in the underwater inverted house. Enter through the windows and open the locked door. Then swim upward and open more locked doors in the underwater area. Opening these doors opens the locked doors in the building above. Once the door is open, enter the building as shown in the fifth picture below. Inside the building, you will find the page on a table.
Diary Page #7: We’re All Mad Here 7
It is inside the burning hut on the southeast side of the map as shown below. You will find the page on top of a table next to a chest.
