Hapjeong Subway Station is an Instant Dungeon accessible with Dungeon Key that Sung Jin-Woo obtained from Random Box.The Dungeon uses the 3rd entrance of the Hapjeong Subway Station. It was inhabited by Steel-Fanged Lycan, Razor-Clawed Briga, and Black-Shadow Razan. The dungeon's boss was Swamp Ruler's, Blue Poison-Fangs Rasaka.
| E-Rank | Hapjeong Subway Station | |
|---|---|---|
| C-Rank | Goblins Dungeon | Insects Dungeon | |
| A-Rank | Hunters Guild Dungeon | |
| S-Rank | Demon Castle | Jeju Island | |
| Unknown Rank | Job Change Quest Dungeon | Penalty Zone | |
| Special Cases | Double Dungeon | White Tiger Guild's Red Gate Incident | |
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