To unlock this trophy, you first need to complete the Creatures of Prophecy main quest and the Scent of Survival favor immediately after, which will grant you access to The Crater region of Vanaheim, and its subregions of The Sinkholes and The Jungle. Once you enter The Crater region, you’ll see that there are two Epic Hunts and seven Dragon Hunts that you need to complete.

All Epic Hunts

• In Plain Sight
• Nocturnal Predator

All Dragon Hunts

• What Lies Below
• Trail of the Dead
• Path of Destruction
• For Vanaheim!
• In the Dead of Night
• Quaking Hollow
• The Burning Skies

Each of the above are favors which can be triggered when you enter a specific area, as described on each of the pages linked.