Weekly Quest

File:WeeklyQ.png
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 Weekly Manager at @go exchange, which will then reward you a Costume Treasure and 5x Kachua's Secret Key

Costume Treasure, which contains a random costume headgear from Shining Moon.
Kachua's Secret Key contains a random item from Kachua Item List

List of instances that count towards the Weekly Quest.

Weekly Quest Instances
Airship Assault	Bakonawa Lake	Bangungot Hospital	Bios Island	Buwaya Cave	Central Laboratory
Charleston Crisis	Devil's Tower	Endless Cellar	Endless Tower	Faceworm's Nest	Ghost Palace
Horror Toy Factory	Infinity Space	Last Room	Morse Cave	Nidhoggur's Nest	Nightmarish Jitterbug
Old Glast Heim (Normal Mode)	Old Glast Heim (Hard Mode)	Sara & Fenrir	Society Raid	Temple of the Demon God	Wolfchev's Laboratory