These are the way to farm Artifacts:
- Doing the Artifacts Domain
- Fighting Bosses
- Investigating Artifacts (numerous locations on the map)
- You can also buy Artifacts as well.
- At higher levels, normals enemies also drop Artifacts as well.
- Levelling up your AR Level
- Levelling up your Travel Adventure Book
- Doing the Spiral Abyss
To get 4 star or 5-star artifacts, you need higher levels. At lower levels, there is no trick to farm 5-star artifacts (if you do Spiral Abyss you’re guaranteed to get 4 stars / 5-star artifacts.