Audio Diary #1 – “Ryan vs Lamb: Religious Rights”
Inside Marlene’s Flower Emporium.
Audio Diary #2 – “Better Times with Lamb”
On the ceiling of Marlene’s Flower Emporium. Access this area by climbing the wooden ramp at the back of the Fishbowl Diner, then crossing the roof and another wooden ramp.
Audio Diary #3 – “Wrong Side of the Tracks”
The front office of the Sinclair Deluxe. You can collect this audio diary before clearing the Brute Splicer’s debris.
Audio Diary #4 – “The End of the Line”
At the makeshift altar to Prentice Mills, in the corner of the large Downtown area with the upended train car.
Audio Diary #5 – “Clinic Code at the Fishbowl”
Sitting right outside the door to Fontaine Clinics, below the code input.
Audio Diary #6 – “Camera in Hock”
On the desk of R. Flanagan. His office is on the second floor of the Hamilton.
Audio Diary #7 – “Arrangements”
After exiting the top floor of the Hamilton, on your way to the Pawn Shop, you will encounter another Little Sister altar full of blue butterflies. The audio diary is there.
Audio Diary #8 – “Therapy With Grace 1”
Before dropping through the hole in the roof of the Pawn Shop to get the research camera, cross the wooden walkway to the Luxury Rooms. An audio diary is here.
Audio Diary #9 – “Blood and Lamb”
Go to the “Books” store in the Skid Row section of the level. The door will be locked until you access and hack through a hole in the back of the neighboring Pharmacy.
Audio Diary #10 – “Mole”
The Skid Row section of this level has a hallway connecting the Pharmacy and Books area to the Limbo Room area with the researchable Brute Splicer. In the middle of the hallway, with a dead Big Daddy and a bunch of fire, is this audio diary.
Audio Diary #11 – “Sunday Services”
Next to the harvest corpse in the upper apartments of Skid Row. Same room as a record player and Tonic.
Audio Diary #12 – “Pauper’s Drop”
In a hidden room off the roof of the Pharmacy. Get there by taking a wooden walkway from the Skid Row apartments where you got the last audio diary.
Audio Diary #13 – “Closing the Limbo Room”
Grace’s dressing room in the Limbo Room.
Audio Diary #14 – “A Gift From Lamb”
Bathroom at the back of Room 106, which is on the first landing (second floor) of the Sinclair Deluxe. Go here before heading down the long, dark hallway.
Audio Diary #15 – “Profit Coming, Profit Going”
Before moving to the second landing (third floor) of the Sinclair Deluxe via a collapsed floor ramp, head right and go up some stairs. You’ll find yourself above the room with the sacrificial corpse and Little Sister vent. Jump across to grab the audio diary.
Audio Diary #16 – “Where Has Harry Gone?”
An apartment room with a safe and turret, on the second landing (third floor) of the Sinclair Deluxe.
Audio Diary #17 – “The Butterfly”
Right before climbing to the third landing (fourth floor), you should notice this blue-hued butterfly room. The audio diary is inside.
Audio Diary #18 – “What A Snap”
On the third landing (fourth floor) balcony. Opposite end as Grace’s apartment door.
Audio Diary #19 – “Barbarism”
Tucked under Eleanor’s bed in Grace’s apartment.
Audio Diary #20 – “Failing Lamb”
Lying on Grace’s bed in her apartment.
Audio Diary #21 – “Field Trial #1”
While escaping Pauper’s Drop after dealing with Grace, kill the Brute Splicer you encounter in the Fishbowl Diner area. Search his corpse for an audio diary.