Finding all Jewels of Yggdrasil is required to fully repair the Amulet of Yggdrasil. You will receive this amulet after defeating Nidhogg. Initially the amulet has only 2 of 9 slots unlocked, each jewel allows you to unlock an additional slot. In total, you can find 7 jewels. After getting the jewel, you should go to any of the smithies and make the upgrade.
Once you fully upgrade your amulet, you will unlock "How it's Going" trophy.
Jewel of Yggdrasil (Midgard #1)It drops from the Frost Phantom during "The Word of Fate" main quest.
Jewel of Yggdrasil (Midgard #2)You can find it inside the Midgard Legendary Chest (The Oarsmen).
Jewel of Yggdrasil (Svartalfheim #1)Drops from one of the ogres you have to fight here during the "Forging Destiny" main quest.
Jewel of Yggdrasil (Svartalfheim #2)You can find it inside the Svartalfheim Legendary Chest (Alberich Island).
Jewel of Yggdrasil (Alfheim)You can find it inside the Alfheim Legendary Chest (The Forbidden Sands #2).
Jewel of Yggdrasil (Vanaheim #1)You can find it inside the Vanaheim Legendary Chest (Noatun's Garden).
Jewel of Yggdrasil (Vanaheim #2)You can find it inside the Vanaheim Legendary Chest (The Jungle #2).
