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HardLv. 1500+4 Players Max

Boss Rush

A sequential boss fighting mode accessed via Rush Keys (dropped by all enemies in-game). Players fight wave after wave of bosses with increasing difficulty. Earn Rush Coins to purchase upgrades from the Boss Rush Shop, including the Sun Armor (+115% Defense, +87% Damage, +25% Damage Reduction when fully upgraded, costs 250 Rush Coins). Selectable difficulty: Easy, Medium, Hard, Extreme. The Boss Rush portal is located on Sailor Island.

Overview

Level Required
1500+
Difficulty
Hard
Max Players
4
Estimated Time
10-15 minutes per run
Sea Region
Early Islands
Last Updated
March 30, 2026

Boss

B

Sequential boss waves

Final boss of Boss Rush

See the Bosses Database for detailed boss stats, drop rates, and strategies.

Rewards

Rush Coins (currency for Boss Rush Shop)

Sun Armor (250 Rush Coins — +115% DEF, +87% DMG, +25% DMG Reduction)

XP and Cash scaling with difficulty

Requirements

  • 1Minimum level: 1500
  • 2Complete the Dungeon Master NPC quest chain on Dungeon Island
  • 3Collect all 6 Ancient Puzzle Pieces from islands across the map
  • 4Defeat 25 bosses (open-world and mini-bosses both count)
  • 5A Dungeon Key or Rush Key (depending on the dungeon type)

Strategy Guide

Boss Rush uses Rush Keys, which drop from all enemies across the game. Stock up on Rush Keys before entering — each run consumes one key on entry. The portal is on Sailor Island.

Difficulty Modifiers

  • Easy: Damage Reduction reduced by 35% — more forgiving for learning boss patterns.
  • Medium: DR reduced 70%, Lifesteal reduced 50% — solid middle ground for Rush Coin farming.
  • Hard/Extreme: DR fully disabled, Lifesteal disabled, iFrames limited to 1.5 seconds only. Requires top-tier gear.

Sun Armor Priority

Save Rush Coins for the Sun Armor (+115% Defense, +87% Damage, +25% Damage Reduction when fully upgraded for 250 Rush Coins). This is one of the best accessories for overall survivability and damage, making it worth grinding Boss Rush for even at endgame.

Tags

boss-rushendgamerush-key-requiredsun-armor

Recommended Builds

Builds that perform well in Boss Rush:

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At a Glance

Quick Overview

Boss Rush

A sequential boss fighting mode accessed via Rush Keys (dropped by all enemies i...

Patch History

  1. 2x Luck + QoL UpdateLatest
    • 2x Luck Event active — all accessory, title, boss rush, and dungeon drop rates doubled. Does NOT apply to trait or race rolling. Stacks with other luck buffs. Source: Discord #game-announcements (Alx, March 30 04:47 UTC).
  2. Hotfixes March 27
    • Fixed Infinite Tower upgrades — now also apply in Dungeons, Boss Rush, and Infinite Tower itself (Alx, #update-logs March 27 20:10).
  3. 2x Luck Event
    • 2x Luck Event — doubled drop rates for accessories, titles, boss rush, and dungeon drops. Does NOT apply to trait/race rolling.
  4. Alter Update
    • Slight increase to Boss Rush coin rewards.
  5. Boss Rush Update
    • Boss Rush event mode introduced — a wave-based game mode where players fight a sequence of bosses back-to-back for escalating rewards.
    • Boss Rush portal added to Sailor Island — requires a Rush Key to enter (obtainable from NPCs or the timed merchant).
    • Boss Rush rewards include exclusive Boss Rush Coins redeemable for rare accessories and cosmetics.
    • Escanor added as the final Boss Rush boss — the most powerful encounter in the mode.
    • Boss Rush difficulty scales with the number of players in the instance.
    • Bug fixes for boss spawn timers in the new Boss Rush mode.

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Boss Rush — Info

Level
1500+
Difficulty
Hard
Max Players
4
Boss
Sequential boss waves
Time
10-15 minutes per run
Rewards
3 items
Updated
2026-03-30