Reduce, Reuse, Recycle Achievement in Assassin's Creed Origins
Reduce, Reuse, Recycle10
Sell 100 trinkets at once.
How to unlock Reduce, Reuse, Recycle
Trinkets are small items that aren't used for anything other than to be sold for gold. They are found in chests (all kinds, not just the ones that are tied to location objectives, killing enemies, etc. In the inventory menu (not the gear menu), look to the right and scroll down until you see trinkets. Make sure you have 100 of them before selling them all at once by holding in any shopkeeper menu.
NOTE: Make sure you have 100 TRINKETS, animal skins and that sort of thing do not count for this.