Nioh

You meet the dung lover in main mission “The Defiled Castle” (Tokai Region). You must give him 30 dungballs, prompting him to give you his helmet “Horned Turban Kabuto” and unlocking this trophy.

Step 1: At the start of mission “The Defiled Castle” farm the 4 Mudman enemies. They lurk in the water and look like umi-bozus from earlier in the game but in brown color (dirty blobs). They have a ~20% chance of dropping a dungball. After killing all 4 use the shrine to make them respawn and keep farming them until you have 30 dungballs. This can take an hour or so. They can also drop “Noble Dungballs” which are even better and count as multiple normal dungballs.

Step 2: When you have 30 dungballs, head upstairs and talk to the man behind the door (near the second shrine of this mission). Give him your dungballs. You can always give him packs of 5 dungballs. After giving 30, you receive his helmet and the trophy. If you give him noble dungballs, it will reduce the amount of normal dungballs needed. Noble dungballs are totally optional and not absolutely necessary.

Mudmen are weak to fire. Enhance your weapon with fire magic and they will die in 1 hit. You can return to this section via mission select at any time. You will most likely find some noble dungballs randomly as you play through the rest of the story. This will reduce the amount of farming required.

If he doesn’t give you the helmet or stops talking to you, just keep farming mudmen and bring him more dungballs. Yummy!

Here is a video guide for the trophy:

https://www.youtube.com/watch?v=gH15iSB_0D0