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Zone 4 -Tunnel- · Impregnable Fortress

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Floors of Impregnable Fortress

• Impregnable Fortress Gate
• Zone 1 -Old Secret Passage B1F-
• Zone 2 -Old Secret Passage B2F-
• Zone 3 -Old Secret Passage B3F-
• Zone 4 -Tunnel-
• Zone 5 -Prehistoric Corridor B3F-
• Zone 6 -Prehistoric Corridor B2F-
• Zone 7 -Prehistoric Corridor B1F-
• Zone 8 -Fortress 1F Entrance-
• Zone 9 -Fortress 2F Office-
• Zone 10 -Fortress 3F Lord's Room-
• Catacomb
• Zone 10 -Fortress 3F Lord's Room-

Quests on this floor

• Search for Missing Person · Guild
• Expose the Intruder · Guild
• Story · Impregnable Fortress Zone 4 -Tunnel- · Other story
• Story · Impregnable Fortress · Glowing Ore · Impregnable Fortress Gate · Other story
• Main Story Chapter 3（2） · Impregnable Fortress Zone 2 -Old Secret Passage B2F- · Main story scenes