State of Decay 2: Juggernaut Edition

This is done in Santos' Story Arch in Heartland

Quincy's character trait (Weaponsmithing) allows him to craft weapons in the Weapon Depot.
You must upgrade the Repair Depot in order to craft the necessary weapons. It requires: 2 Labor and 5 Scrap of Circuitry which you can find early on or later on during a quest to upgrade it. Be sure that Quincy does not die otherwise you must restart your playthrough.

There is one melee weapon and three firearms that you must craft

Melee:
Craft Lead-Filled Bat: 2 Materials and 150 Parts

Firearms:
Craft Suppressed Bolt-Action Rifle: 3 Material and 300 Parts
Craft Homemade Assault Rifle: 3 Material and 200 Parts
Craft Masterwork Assault Rifle: 3 Materials, 375 Parts, and 2 Scraps of Circuitry

Requirements:
11 Materials
2 Scraps of Circuitry
925 Parts

Results:
Danforth Slugger
Trumbull Gatekeeper
Network DIY Assault Rifle
Masterwork Assault Rifle

To follow on from the previous guides, if, like me, you're restarting a play through of this storyline purely for this achievement (having got Quincy killed before without realising the consequences!) by far the quickest way to get it is:

Upgrade the weapons depot as soon as you get settled in your base, you'll probably have to do a bit of initial exploring to find the bits of circuitry required but there are plenty of sites to do this within a short distance of your base (I got one sack of materials, some parts and some circuitry from the garage and house at the very start of the game where you first meet Isaac)

Ignore the story, and don't run around trying to find loads of parts. Just concentrate on getting as many rucksacks of materials as you need, use the radio commands if necessary.

Use the storage section in the base to break down the materials into parts, you get 40 parts per unit of materials. If you've found any guns these can also be broken down for a few extra parts.

Use the parts (leave some materials spare as you'll need 11 of them as well in total plus a couple of bits of circuitry) to craft the 4 network weapons. It doesn't matter if you craft them all at once or 1 at a time.

Achievement unlocked, far quicker than trying to find parts out in the field, I did it in under half an hour.

Such Wonderful Toys
Used the Weapons Depot to craft all four of the Network weapons in Heartland

This is done in Santos' Story in Heartland. You will use Quincy's character trait Weaponsmithing to upgrade the Repair Depot, and then craft the 1 melee weapon & 3 ranged weapons.

Danforth Slugger
Trumbull Gatekeeper
Network DIY Assault Rifle
Masterwork Assault Rifle

This video will show you how everything is done. I hope you enjoy the guide, if you have questions just ask!!