From Dark and Darker Wiki
I killed 4 Living Armor in the Forgotten Ruins room ( 1st Level ) and got 3 armor scraps. There is only one listed recipe on the wiki for them above, but they are currently selling for 183 each, so there may be another recipe. AI - " Armor Scraps are primarily used to complete quests for merchants, notably the Weaponsmith's "Gathering Progress" and the Huntress's daily missions. They are essential crafting materials for producing various gear pieces, and with recent updates, they can be used within the Workshop system to craft new equipment. "