Here is a guidance for finding all 18 collectibles! Spoiler warning!
Introduction

Faraday Protocol is a short first-person puzzle game featuring 34 levels and 18 collectibles.
Chapters can be replayed at any time.
Collectibles

From top left to bottom right:
| Collectible⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ | Chapter – Level⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ |
|---|---|
| Barn Owl Canopic Jar | Chapter 2 – Level 3 |
| Bia Tool | Chaper 6 – Level 3 |
| Blob Bouncer | Chapter 5 – Level 5 |
| Column | Chapter 2 – Level 4 |
| Elevator | Chapter 1 – Level 3 |
| Golden Council | Chapter 6 – Level 4 |
| Toy Rocket | Chapter 6 – Level 2 |
| Push Button | Chapter 2 – Level 6 |
| Rotating Rudder | Chapter 1 – Level 2 |
| Spider Canopic Jar | Chapter 1 – Level 4 |
| Barn Owl Statue | Chapter 3 – Level 5 |
| Spider Statue | Chapter 3 – Level 3 |
| Hexagon | Chapter 3 – Level 1 |
| Wall | Chapter 5 – Level 3 |
| Faraday Book | Chapter 4 – Level 5 |
| Bridge | Chapter 5 – Level 2 |
| Tiny Earth | Chapter 3 – Level 2 |
| Iris Drone | Chapter 6 – Level 1 |
⋗︎ Chapter 01 – Initiation
Press the button behind the red statue (must be active):
Level #3 | Collectible: Elevator
There’s a button hidden behind the last column (must be active):

Level #4 | Collectible: Spider Canopic Jar
Press the button hidden behind the blue statue (must be active) in the room on the right:

⋗︎ Chapter 02 – Path
In the second room, there’s a button behind this red statue (must be active):
Level #4 | Collectible: Column
Press the button hidden behind this red statue (must be active):

Level #6 | Collectible: Push Button
Press these two buttons on the ground floor:
⋗︎ Chapter 03 – Emersion
There’s a button hidden behind the column under the blue bridge:
Level #2 | Collectible: Tiny Earth
In the second room, press the button behind the column on the right:

Level #3 | Collectible: Spider Statue
Open the sarcophagus on the left and press the button behind it:

Level #5 | Collectible: Barn Owl Statue
Find and press this hidden button in the first room:

⋗︎ Chapter 04 – Transition
Outside Ziqqurat 2, on the opposite side of the entrance:
Again, find and press a hidden button (first room):
Level #3 | Collectible: Wall
There’s a button hidden behind the blue statue (must be active) in the fourth room:

Level #5 | Collectible: Blob Bouncer
In the room on the right, press the hidden button behind the red statue (must be active):

⋗︎ Chapter 06 – Iris
There’s a button hidden behind one of the Bia tools on the right (final room):
Level #2 | Collectible: Toy Rocket
Interact with the broken puzzle in the second room (get the blue power from the previous room):

Level #3 | Collectible: Bia Tool
At the beginning, press the button hidden behind the red statue (must be active):

Level #4 | Collectible: Golden Council
The final button is behind the second statue on the right, at the beginning of the level:

Bonus
There are three buttons on the columns on the left. Interact with them in this order: RKB.
Thanks to Hanni for his great guide, all credit to his effort. you can also read the original guide from Steam Community. enjoy the game.