MediumConfidence: 0.95
Dungeon Sweeper
Conquered the Yokohama Underground.
Global unlock
20.8%
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What to do next
SourceClear Yokohama (Ijincho)'s underground dungeon. Opens during Ch.9's Kiryu Ending Note line; ends with a strong mob-rush + the Guild Master boss.
1) Open via Ch.9's Kiryu Ending Note.
2) Push to the end and beat the Guild Master.
3) Trophy fires on clear.