Clear 5 1-Star Dungeons.

Shadow's Eve 5/11: Trovian! It is good to see you. There are so many enemies! No matter how many you defeat there are always more. Their numbers are without end! I can sense the blessings of the Moon Goddess upon you. This is good, because what I ask will require all the help you can get. This Curse must have a source; we must find it! Perhaps a clue lies within the nearby dungeons. Try clearing some and see what you can find.

Clear a Pumpkin Dungeon.

Shadow's Eve 6/11: Oh my, this is awful. These wolves are overrunning everything! And what’s that, Lunar Condensate?! We'll have to get that back to the quartermasters, but first we must investigate the Pumpkin Dungeons that have started appearing. Perhaps they are the source.

Return to the High Priest.

Shadow's Eve 7/11: This is worse than I feared. Were-Pumpkins?! This curse can even affect plants. The Pumpkin Dungeons are surely the source on Trove, but the Lunar Condensate points a far darker, deeper source. Return to the High Priest and report what you have found. Press [HK:Loot] to interact with an npc.

Craft a Delve Gateway to the Wolves' Den.

Shadow's Eve 8/11: You have returned, well done Trovian. The wolf-curse is a dire one. It begins with a single corrupted soul and spreads like a plague with each bite and scratch. Thanks to the Lunar Seals you are protected, but others.... This Lunar Condensate comes from the depths of the Delves. I suspect you will find the source of this curse there. Using this Lunar Condensate you can craft a gateway to where it came from. Be wary, the shadow is strongest where the light of the Sun and Moon cannot reach.

Slay Q'berus.

Shadow's Eve 9/11: The Gateway is crafted, it is now up to you to go to this Wolves' Den and eliminate the source. Place the gateway and enter the Delve.