Double Dungeon
An endgame dungeon featuring the Shadow Monarch boss. The Double Dungeon is one of the most challenging PvE encounters in Sailor Piece, requiring high-level gear and coordinated team play. Shadow Monarch drops the Monarch Blade accessory (0.75-1.5% drop rate, 140 pity).
Overview
Level Required
5000+
Difficulty
Extreme
Max Players
4
Estimated Time
15-25 minutes
Sea Region
Endgame Islands
Last Updated
2026-03-15
Boss
- S+
Shadow Monarch
Extreme difficulty
Rewards
- •
Monarch Blade accessory
0.75-1.5% drop rate, 140 pity
- •
XP and Cash
Requirements
- 1
Minimum level: 5000
- 2
Complete the Dungeon Master NPC quest chain on Dungeon Island
- 3
Collect all 6 Ancient Puzzle Pieces from islands across the map
- 4
Defeat 25 bosses (open-world and mini-bosses both count)
- 5
A Dungeon Key or Rush Key (depending on the dungeon type)
Strategy Guide
The Double Dungeon features the Shadow Monarch boss — one of the most difficult PvE encounters in Sailor Piece. The Monarch Blade accessory drops at 0.75–1.5% with a pity system at 140 kills. Plan for a significant farming session.
Tips
- • Bring a full group of 4 players — this boss is designed for team play.
- • Use an S+ or S tier sword. Anything below A-tier will make this fight extremely long.
- • Equip your best defensive accessories for the survival check phases.
- • Track your kill count against the 140 pity — guaranteed Monarch Blade at pity.
- • Warning: This is Extreme difficulty content. Come at level 5000+ with Conqueror Haki trained and all puzzle pieces collected. Underprepared players will not survive the final boss phases.
Tags
Recommended Builds
Builds that perform well in Double Dungeon:
- •
Warlord + Strongest Shinobi (Current Best Combat Build)
- •
Kitsune + Eminence Clan Farming Build (Massive Update Meta)
- •
Galevorn + Anos Pure Melee Endgame
Related Content
Bosses in This Dungeon
Shadow Monarch
Extreme difficulty