While exploring the Island of Waford in One Piece Odyssey, you’re bound to find loads of treasures along the way. One such category of treasure is the Locked Chest which contains resources vital to your survival on the island provided you have a chest key to open them with. Below is a guide on where you can find the locked chests in Dressrosa. Opening all of them rewards you with the Treasure Hunter trophy/achievement. Please note that you will have to complete the Grand Line Quiz questline in order to receive the key needed to open the chests. You can find details on those quests here.
Dressrosa City Area
Coliseum Path
The chest can be found at the top of some steps next to a building northeast of the fountain near the coliseum.
Dressrosa City Old Residential District
This chest can be found next to the steps of a house in the residential district located in the northeastern part of the city. You’ll need to use Chopper to squeeze through some rubble in order to reach it.
Weapon Shop – Rose Guerrero
This chest is located in the weapon shop on the road north of the coliseum.
New Royal Plateau: Bottom
New Royal Plateau – 1st Level – Great Fissure
This chest can be found on a ledge overlooking the remains of a blue building in the northern part of the area.