The following guide lists every blueprint required for the "Every Last Scrap" achievement. There are a total of 108 blueprints.

This includes:

• Faction blueprints
  
• Boss blueprints
  
• Relic ("Secrets of...") blueprints
  
• General gear blueprints
  
• General vehicle blueprints

This guide is up-to-date as of 2025-05-05.

A table of all 108 blueprints can be seen here:

These blueprints are found as mission rewards in the corresponding biome for each faction.

There are a total of 6 blueprints for each of the 4 minor factions:

• Basic Blueprints 1 and 2
  
• Advanced Blueprints 1 and 2
  
• Boss blueprints, Basic and Advanced

On the overall map, each minor faction will have 2 biomes associated with it, each with its own stronghold.

In my experience, the basic blueprints would all appear in the first biome as mission rewards, often for taking outposts. The advanced blueprints would not appear until the second biome.

Boss blueprints are obtained as a mission reward for conquering the stronghold at the end of each biome.

There are a total of 38 relics to find, scattered across the map.

Some other helpful people have compiled a map, which can be found in the guide linked below, under the "Discovery Achievements" section:
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=3475116524

The remaining blueprints are split into "Gear" and "Vehicle" blueprints

These are found as mission rewards as you progress through the game. They are randomly assigned, so you will sometimes find missions where you can earn 2 at once.

The blueprints appear to be gated by progression, i.e. once you've collected all of the blueprints up to a certain point, no more will generate as rewards until you start completing story missions or capture a stronghold to move on.

The only exception to this is "Gekko's Gear". You will receive this after completing 5 races (green flag missions) once you return to base after the last race. I am unsure if you are required to win these races, but it's not hard if you do this in an area with lots of enemies. He doesn't seem to be able to die, but enemy patrols will accost him and get in his way, slowing him down while you run ahead.