ONE PIECE World Seeker – Treasure Hunter Achievement Guide
Open 200 treasure chests
Some of these you have to pick up, go to the location indicated, and search for a yellow sparkle. (You have to have finished the ‘Treasure Map’ sidequest, which is a storyline sidequest in Chapter 8).
Turtle Map: Crystal Canyon East Side. Treasure Location: West of Sapphire Town above the beach in the Turtle-like cave.
Dragon Map: Cannon Island all the way North. Treasure Location: Crystal Canyon at the top of the crystal structure.
Cloud Map: Aboard the Ship Wreck west of Sapphire Town. Treasure Location: Law’s Sky Island at the peak.
Waterfall Map: Luffy’s Sky Island Northeast next to a chest. Treasure Location: Behind the waterfall in Crystal Canyon.
Pond Map: Aboard the Pirate Ship in Ruby Village. Treasure Location: The lone rock in the lake in the Graveyard.
Stepping Stones Map: You get this for doing the Ghost in a barrel sidequest (Ruby Village). Treasure Location: Sea Prison – Aquamarine next to the bridge.
Boulder Map: Law’s Sky Island North. Treasure Location: On the mountain/cliff next to the Thousand Sunny.
Ruins Map: For finishing the ‘Where’s Buggy?’ sidequest (You get it in Ruby Village after finding the Stepping Stones treasure). Treasure Location: between 2nd and 3rd street Emerald Town.