This FAQ uses youtube videos to walk you through the entirety of Dead Space 3 and help you collect every single thing in the game. That means you'll find every weapon part, circuit, and audio log. It also means there are tons and tons of spoilers to be seen, heard, and read. This is your only warning.
Prologue - Chapter 3
Prologue
1 SCAF Artifact
Chapter 1
1 EarthGov Artifact
1 Unitology Artifact
1 Text log
1 Audio log
Chapter 2
1 EarthGov Artifact
1 Audio log
Chapter 3
1 SCAF Artifact
2 Text logs
2 weapon parts
2 circuits
Chapter 4
Optional Mission: CMS Greely
Co-op Mission: CMS Brusilov
2 EarthGov Artifacts
3 SCAF Artifacts
1 Alien Artifact
5 Text logs
3 Audio logs
12 Weapon Parts
1 Blueprint
7 Circuits
Chapter 5
Optional Mission: Conning Tower
3 SCAF Artifacts
5 Text logs
4 Audio logs
6 Weapon Parts
6 Circuits
Chapter 6
1 SCAF Artifact
1 Audio Log
1 Weapon Part
2 Circuits
Chapter 8
1 SCAF Artifact
2 Text logs
2 Audio logs
3 Weapon Parts
1 Blueprint
2 Circuits
Chapter 9
Optional Mission: Supply Depot
3 SCAF Artifacts
4 Text logs
7 Audio logs
8 Weapon Parts
3 Blueprints
5 Circuits
Chapter 10
1 SCAF Artifact
1 Alien Artifact
1 Audio log
4 Weapon Parts
1 Circuit
Chapter 11
Co-op Mission: Archeology
Optional Mission: Armory
1 EarthGov Artifact
3 Unitology Artifacts
4 Text logs
6 Audio logs
9 Weapon Parts
2 Blueprints
10 Circuits
Chapter 13
1 SCAF Artifact
4 Weapon Parts
1 Blueprint
1 Circuits
Chapter 14
Co-op Mission: Marker Containment
Optional Mission: Disposal Services
Optional Mission: Reaper Barracks
1 EarthGov Artifact
1 Unitology Artifact
3 SCAF Artifacts
2 Alien Artifacts
7 Text logs
4 Audio logs
14 Weapon Parts
3 Blueprints
13 Circuits
Chapter 15 & 16
Chapter 15
2 Weapon Parts
Chapter 16
1 Audio log
4 Weapon Parts
1 Blueprint
1 Circuit
Chapter 17
Optional Mission: Artifact Storage
1 Unitology Artifact
3 Alien Artifacts
4 Text logs
3 Audio logs
2 Weapon Parts
10 Circuits
Chapter 18 & 19
Chapter 18
2 Alien Artifacts
1 Text log
2 Audio logs
2 Weapon Parts
1 Circuit
Chapter 19
1 Alien Artifact
Explore the galaxy in the franchise's first open-world game.