This can be earned fairly early in the game by trading a herb for the Light Stone. Please follow the guide below at the 14 minute mark to follow along to find a missable area to gain the item and make the trade for the achievement. The video will show the path from the previous collectable (Meditation Bead) to the spot to make the trade for the Light Stone. Make sure to sheath your sword!
For all achievements in the game, you can follow this awesome guide on YouTube:
All credit to Trophy Tom. Please like or subscribe to support him. Please note how he has conveniently labeled sections of his video based on which achievement is next or what item you are tracking down, this can be seen if you watch his video on YouTube on the video progress bar instead of the imbedded video here on True Achievements. It is a very well done 100% guide.
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