Below is a walkthrough for the collectibles found during Chapter VIII: A Sea of Promises in A Plague Tale: Requiem. In this chapter, you’ll find a feather for Hugo’s Collection and souvenirs. Make sure to always pick up a knife if you see one so you can open the secret chests!
Hugo’s Collection: Black Kite
After exiting the boat, follow the path forward to reach the market. Head to the back left side to reach a grassy area. There will be a lady addressing a group of people.
Head behind the people to find the feather on the ground next to a tree.
Souvenir: Silent Lucinda
From the above collectible, head across the other side of the market to find a small archway. Head through it to reach a petting zoo.
Interact with Hugo to acquire the souvenir.
Souvenir: Flower Crown
Exit the market then take the first left down a flight of stairs to reach an enclosed area with a triangular table in the middle. Just past the table there will be a stand with wreaths.
Play the mini game to receive the souvenir. If you get all the pots accurately through the wreaths, you’ll receive the Perfect Throw achievement/trophy.