If you're just looking to complete the Know Your Enemy trophy, you only need 20 out of the 50 artifacts that you can find scattered over the several regions. Except for your personal satisfaction, finding more artifacts doesn't serve any purpose.
In the vast majority of cases, Mongol Artifacts are present in occupied places — and more specifically in Mongol camps, which already greatly reduces the search area.
Like almost all collectible items, the Traveller's Attire will make your hunt easier. By equipping it, you will know when a special object is nearby thanks to the vibrations of the joystick. What's more, you'll be able to activate the Directing Wind specific to Mongol Artifacts to help you spot them.
Select the type of wind with Triangle, then press the right part of the directional cross. It is obviously not ideal to fight with this armor, so we advise you to clean the places with your favorite armor, then to change it once the defenders are eliminated.
Mongol Artifacts are not easy to spot visually. They are sometimes on the shelves or tables in yurts, or they are hung outside on panels. In addition, their appearance is changing, they are almost all unique. Use the wind to get their general direction in relation to your position then spam the trigger R2 in the area while searching.
As you will see from the maps below, the artifacts can also be in small Mongolian camps which do not count as occupied areas and which are linked to secondary stories. However, there are no artifacts in areas related to the main story, such as the castle.
We're currently farming Ghost of Tsushima so we can get the exact locations of all remaining Artifacts. We'll update this article as soon as we'll find them.