The The Unfinished Map Add-on for ONE PIECE World Seeker has 6 achievements worth 185 gamerscore.
Complete all Main Missions in
"The Unfinished Map"
Learn all of Law's Skills
Takedown 20 enemies as Law
Use Shambles on an Enemy 30 times
Clear 2 Challenge Missions as Law
Get the top Grade as Law on 2 Challenge Missions