Boss Rush Guide
Boss Rush is where the chase classes come from in Dungeon Lootr. Pick a boss line, climb floors, and either get lucky with a class-item drop or farm fragments for a guaranteed Forge craft. Here is the whole loop.
By Ken Lee · Last checked: 2026-09-05
How Boss Rush Works
- 01Unlock the mode - community guides cite entry around player level 67+, and your Gear Score decides how high you can actually climb.
- 02When creating a Boss Rush lobby, pick the boss line of the class you want - the boss line you choose decides which fragments drop.
- 03Climb floors. From floor 40 onward the class item itself can drop; creator guides report better odds on higher floors.
- 04No luck needed: 50 fragments from a boss line craft that class item at the Forge - the guaranteed route.
Chase Class Boss Lines
Every chase class farmed here follows the same pattern: floor-40+ drop luck, or 50 fragments for the guaranteed craft. Full step-by-steps are on each unit guide.
Cursed King (Sukuna)
- • Drop: Class item drops from floor 40 up
- • Craft: 50 Sukuna Fragments → Forge craft
- • The most-cited best class in the game. Pick the Sukuna boss line when creating the lobby.
Honored One (Gojo)
- • Drop: Class item drops from floor 40 up
- • Craft: 50 Infinity Fragments → Forge the Infinity Core
- • Needed again for the Toji quest later - keep spare fragments.
Anti Magic (Asta)
- • Drop: Class item drops from floor 40 up
- • Craft: 50 fragments from the Asta boss line → Forge craft
- • GameRant's S-tier pick; excluded from the normal spin pool.
Farming Tips
- • Craft, don't pray. The 50-fragment Forge route is slower per run but ends the RNG - pick your target's boss line from the first lobby.
- • One target at a time. Fragment farming is per boss line - finish one craft before swapping the lobby boss.
- • Gear Score first. Failing floor 35 wastes more time than a slower floor-25 clear. Upgrade before you climb.
- • Keep Gojo spare fragments. The Toji questline needs Honored One progress later - don't dump leftovers.
Beyond Boss Rush: Nightmare & Challenge
- • Nightmare difficulty - Dreadlord drops from the Underworld Gate (last story map) on Nightmare, community-cited at roughly 1%. The Azure Devil route also runs through a Nightmare-spawn boss in Frost Spire.
- • Challenge Mode - the Toji (Unrestricted) questline sends you here for Heaven Fragments alongside its level, coin and class requirements.
- • New to the game? The beginner guide covers the core loop, and the class tier list tells you which of these crafts is actually worth the grind.
Boss Rush FAQ
- What floor do class items drop from in Boss Rush?
- Class items can drop from floor 40 onward, with creator guides reporting better odds on higher floors. Every chase Boss Rush class (Sukuna, Gojo, Asta) follows the same rule.
- How do I get a specific class guaranteed?
- Craft it. When creating a Boss Rush lobby, pick the boss line of the class you want - that boss line drops its fragments, and 50 fragments craft the class item at the Forge. It is slower than a lucky drop but has zero RNG at the end.
- What level do I need for Boss Rush?
- Community guides cite entry around player level 67+ - treat the exact number as approximate. In practice your Gear Score is the real gate: you need to clear floors consistently, not just unlock the mode.
- How many floors are in Boss Rush?
- Community guides describe a 100-floor gauntlet with the biggest payout at the top. The farm that matters for chase classes starts much earlier, at floor 40.
- Is Dreadlord from Boss Rush?
- No - Dreadlord drops from the Underworld Gate story map on Nightmare difficulty (community-cited ~1% rate), not from Boss Rush. Boss Rush covers the Sukuna, Gojo and Asta class lines.