In One Piece Odyssey Zoro’s experience and skills will be taken from him. In order to get them back, you’ll need to locate 50 cube fragments scattered around Waford Island. Below is a guide on where to find his cube fragments in Marineford. You’ll receive the Cube Collector: Zoro trophy/achievement for finding all of his cube fragments.
Marineford City Area
South Town
This cube can be found in the corner northeast of the water fountain.