In File 05 – Siege in Astral Chain. You have to play it again for the dropped item, the buried item, the cat, the toilet and the photo order.
[Astral Chain] File 05 - 100% (Cases, Items, Photo Order, Toilet, Cat)
File 05 – Items
File 05 – Supply Crates (40) & Dropped Items (14)







File 05 – Buried Item (3)
File 05 – Cases
Gifts
Lappy’s Lament
Rest
Shocking!
The Escape Artist
The Best Medicine
Uproar
Pickpocket Prevention
No Photography
Explosion
Chimera Takedown
Astral Investigation
Secret Hideout
Backup Plan
Out From the Smoke
Flame
Chimera Takedown
Ground Zero
Beast
Taming the Beast
Odd Drone, Again
Contact
An Old New Threat
File 05 – Toilet Location
[Astral Chain] File 05 - Toilet Location (Nature Calls Order)
File 05 – Cat Location
[Astral Chain] File 05 - Cat Location (Feline Friends Order)
File 05 – Photo: Get Well Soon!
[Astral Chain] File 05 - Photo Order: Get Well Soon Location
File 05 – Rare Chimera (Slime)
[Astral Chain] File 05 - Slime
If you didn’t find the last two chests yet: there is an hidden Hermit area in the subway area. Right when you enter it after the cutscene with the gasmask go where the first guy is down the stairs that lead to the floor below. Go down to the tracks to the left of the guy and follow them to the end (it’s about the very south spot on your 4th screenshot of the maps). Check the walls around that area on the northern side. The last Red Case is also there.
The two missing crates are in a hidden hermit base at the bottom left tunnel of the yellow line platform map, near the first civilian
2 Supply Crates
a secert room at the lower left corner of your fourth map
Okay where are the dig spots I have two out of three. I know that at least one is located near the end of the Astral Plane section before you head out to fight the Protolegions but I can’t remember the other two. Also I am missing one dropped item.
You can easily use the timestamps for all the dropped items in the youtube video.