Requires you to finish 5 Memorial Dungeons.
You have time until Monday 00:01 server time to finish these and hand it in at the Instance Manager, which will then reward you a File:CostumeTreasure.png Costume Treasure, which contains a random costume headgear from Shining Moon.
List of instances that count towards the Weekly Quest.
|Endless Tower||Temple of the Demon God||Central Laboratory||Morse Cave||Bangungot Hospital||Society Raid||Nightmarish Jitterbug|
|Endless Cellar||Old Glast Heim (Hard Mode)||Bios Island||Sara & Fenrir||Buwaya Cave||Wolfchev's Laboratory||Bakonawa Lake|
|Last Room||Faceworm's Nest||Ghost Palace||Charleston in Distress||Old Glast Heim ( Normal Mode )||Devil's Tower||Airship Assault|
|Nidhoggur's Nest||Infinity Space||Horror Toy Factory|