Dungeon Lootr Boss Rush: 100 Floors, All Three Lines
Updated 2026-09-08 · Last verified 2026-09-08 · Roblox Dungeon Lootr
Boss Rush is a 100 floor mode split into three separate boss lines, Sukuna, Gojo and Asta, and fan wikis put the recommended entry point at around level 67. Each line ends in class fragments that the Forge turns into an Exotic class, and from floor 40 onward the mode also drops class items, which override your entire skill set when equipped.
Boss Rush is one of only two named modes in the official Roblox game description for Dungeon Lootr, alongside Challenge Dungeon. That is a first-party confirmation that the mode exists and is a headline feature. Almost everything below the name comes from fan documentation, so this page marks how many independent sources back each fact and states plainly where nothing reliable exists.
Boss Rush at a glance
| Detail | Value | Confidence |
|---|---|---|
| Total floors | 100 | Documented by fan wikis, consistent across sources |
| Boss lines | 3 (Sukuna, Gojo, Asta) | Consistent across sources |
| Recommended level | Around 67 and up | Fan guidance, no official requirement published |
| Class item drops start | Floor 40 | Fan wikis, single documented figure |
| Fragment drop size | 8 to 18 per drop | Recorded identically for all three lines |
| Mode named officially | Yes, in the Roblox game description | First-party |
| Fragment drop rates | Not published | ClickBytes has released nothing |
| Total fragments needed to forge | Not documented | No source states a number |
The player level cap is 175 according to the official Roblox game description, so a level 67 entry point places Boss Rush in the mid game rather than as endgame content. One secondary source lists the cap as 100 instead; we use the figure from the official description. See levelling for the full picture.
The three lines side by side
Each line is named after its floor 100 boss, and each feeds a different Exotic class through the Forge. The Asta line is the odd one out because its fragments are documented at three separate floors rather than only at the end.
| Line | Final boss | Fragment floors | Fragments per drop | Forges into | Class rarity |
|---|---|---|---|---|---|
| Sukuna | Sukuna | Floor 100 | 8 to 18 | Cursed King | Exotic |
| Gojo | Gojo | Floor 100 | 8 to 18 | Honored One | Exotic |
| Asta | Asta | Floors 80, 90 and 100 | 8 to 18 | Anti Magic | Exotic |
All three resulting classes are confirmed Exotic and all three are confirmed as Boss Rush and Forge acquisitions rather than spin pool classes. That is worth stressing, because the class spin is how most of the roster is obtained and Exotic is the rarest tier in the game's six step ladder of Rare, Epic, Legendary, Mythic, Celestial and Exotic. Boss Rush is one of the few routes to an Exotic class that does not depend on a spin, a limited bundle or an NPC quest chain.
The three boss names are clear tributes to anime series, and the same pattern shows up elsewhere in the game with Igris in Challenge Dungeon and the Shadow Monarch's Dagger class item. That internal consistency is one reason we treat the Boss Rush line naming as genuine rather than as fan invention. The full boss roster, including the ones outside this mode, is on the bosses page.
What the fragments actually are
Class Fragments appear in the game's material list alongside Iron Ore, Gold Ore, Infernal Ore, Ingots, Forge Stone, Reforge Stone, Radiant Ore, Exotic Ore and Heavenly Fragment. They are a Forge input, not a class in themselves. Clearing a fragment floor gives you a stack of 8 to 18, and you take that stack to the Forge to build the class.
What nobody has documented is the target number. No source we trust states how many fragments Cursed King, Honored One or Anti Magic each require, and the three totals are not necessarily the same. If a page tells you the exact count, ask where it came from. ClickBytes has not documented this.
Likewise, the drop is described as a range rather than a fixed amount, which implies the roll varies per clear, but the distribution inside that 8 to 18 band is unknown. There is no confirmed way to work out how many runs a forge takes.
Class items from floor 40
From floor 40 onward Boss Rush drops class items. Three are documented:
| Class item | Associated line | Effect |
|---|---|---|
| Cursed Shrine | Sukuna | Overrides your entire skill set |
| Infinity Core | Gojo | Overrides your entire skill set |
| Shadow Monarch's Dagger | Not documented | Overrides your entire skill set |
Cursed Shrine and Infinity Core are recorded against the Sukuna and Gojo lines respectively. The Shadow Monarch's Dagger is documented as a class item with the same behaviour, but no source we trust attaches it to a specific line, so we do not assign it to one. Its name matches the same anime tribute pattern used across the game's boss naming.
Why the override mechanic matters
This is the part worth spelling out, because it is genuinely unusual for a Roblox ARPG. In normal play your class defines your four abilities, and your gear modifies numbers through Gear Score and affixes across the three slots of Head, Body and Ring. Gear does not change what your buttons do.
A class item breaks that rule. Equipping one overrides the whole skill set, so the item, not the class, decides what you cast. In practice that means a Boss Rush class item can turn a Rare tier class into something that plays like an Exotic, and it means your carefully chosen Aspects, which bind to the current class, sit alongside a completely different set of abilities. It also means the usual way of evaluating a class, by reading its four skills and Mastery bonuses, does not describe what you are actually playing once a class item is on.
The mechanical detail beyond that is thin. We do not know whether class items occupy one of the three gear slots or a separate slot, whether Mastery levels on the underlying class still apply, or whether the override touches passives as well as active skills. None of that is documented. We would rather leave those questions open on this page than fill them with plausible sounding invention, which is exactly what the low quality Dungeon Lootr wikis do.
Because the drop starts at floor 40, class items are also the reason to run Boss Rush before you can realistically reach floor 100. A run that dies at floor 55 is not wasted.
Preparing for a run
There is no published gate on Boss Rush, so the level 67 figure is guidance rather than a requirement. What supports it is the shape of the rest of the game: the standard dungeon chain runs Bandit's Den, Goblin's Stronghold, Forgotten Ruins, The Catacombs, Frostspire Bastion and Underworld Gate across Normal, Hard and Nightmare difficulty, and Challenge Dungeon unlocks at level 55. A player at 67 has usually cleared most of that chain. The dungeons page covers the progression order.
Practical points that are actually confirmed:
- Stats. The game runs four stats, Strength for physical, Dexterity for ranged, Intelligence for magic and Vitality for health. Your allocation carries into Boss Rush like anywhere else. See stats and builds.
- Gear. Three slots, Head, Body and Ring, each carrying a Gear Score and affixes. The Forge's four operations are Upgrade, Reforge, which rerolls all affixes using a Reforge Stone, Protect and Enhance.
- Game passes. ClickBytes sells ten passes, including x2 Drop Rate, Extra Loot, Increased Luck, Auto Forge, Aspect Hunter and VIP. Whether any of them affect Boss Rush fragment drops specifically is not stated anywhere, and we are not going to imply it does.
- Blessings. Nimble, Focused Casting and Bulwark are documented as a three way choice offered during runs. Whether they appear inside Boss Rush specifically is not documented.
Standard dungeons use an extract or lose all loop, which is the core risk mechanic of the game. No source we trust states whether Boss Rush uses the same rule, whether floor progress is saved between sessions, or what happens to a partial fragment stack if you die on floor 99. Treat that as unknown.
What Boss Rush unlocks downstream
Honored One is the Boss Rush reward with the longest tail, because it feeds a documented unlock chain. Unrestricted requires level 75, 500,000 coins, Honored One at class level 25 and 10 Heavenly Fragments. That chain is confirmed by multiple sources and is one of the few precise cost lists in the game that we are confident quoting.
Note that Unrestricted is Celestial, not Exotic. Several competing wikis have it wrong. Since Heavenly Fragments come primarily from Challenge Dungeon, the Unrestricted chain forces you through both modes rather than one.
Cursed King and Anti Magic have no documented follow-on unlock of the same kind. Anti Magic is also the class most likely to be confused with the Anti-magic Claymores, which are a confirmed weapon and a separate thing.
What is not documented
We are explicit about this because it is the whole point of the site. The following are all unknown, and any wiki that states them confidently is guessing:
- Floor by floor enemy lists. No credible source publishes what spawns on which floor, or where difficulty steps up. The one large competing wiki that has boss guides does not name a single boss in them.
- Exact fragment drop rates. Not published by ClickBytes. The 8 to 18 range is the only number with any support.
- Total fragments required per forge. Nobody documents the target for Cursed King, Honored One or Anti Magic.
- Whether the three lines can be run in parallel. Unknown, including whether floor progress is shared between lines.
- Class item drop rates from floor 40 onward. Unknown, and unknown whether the rate scales with floor depth.
- Whether UPDATE 1 changed Boss Rush. UPDATE 1 shipped on 7 September 2026 and added four Exotic classes, Spell Breaker, Cryomancer, Coyote and Dark Professor, taking the roster to 33. See UPDATE 1. What it did to Boss Rush, if anything, is not covered by any patch note we can read.
A related caution: probability tables for the class spin circulate widely and are fan made. One version sums to 100.55 per cent and another to 75 per cent, so neither can be correct. ClickBytes has not published rates for anything, spins or Boss Rush drops. The only figure the two fan tables agree on is Exotic at 0.05 per cent, or 0.1 per cent with luck, and even that is unofficial. Boss Rush matters partly because it is a route to Exotic classes that does not involve that lottery at all.
Update 1.5 is scheduled for 12 September 2026 at 20:00 UTC as a bridge patch between UPDATE 1 and UPDATE 2, and content updates have been landing weekly on Saturdays. If Boss Rush changes there, this page changes with it.
Update log
- 8 September 2026: Page created. Three lines, 100 floors, fragment floors and the floor 40 class item threshold recorded from fan documentation; mode existence confirmed against the official Roblox game description. Unknowns listed explicitly rather than filled in.
Frequently asked questions
What level should I be for Boss Rush in Dungeon Lootr?
Around level 67 and up is the figure fan wikis give as the recommended entry point. ClickBytes has not published a hard level requirement for the mode, so treat 67 as community guidance rather than a lock. The player level cap is 175 according to the official Roblox game description, so 67 sits a little over a third of the way through the levelling curve.
How many Boss Rush floors are there?
One hundred. Floor 100 is the final boss of whichever line you are running, and it is where the Sukuna and Gojo lines drop their class fragments. The Asta line is documented as dropping fragments at floors 80, 90 and 100 instead of only at the end.
How many fragments does Boss Rush drop?
Fragment drops are recorded at 8 to 18 per drop across all three lines. That is a range for a single drop, not a total. How many fragments the Forge needs to complete Cursed King, Honored One or Anti Magic is not documented anywhere we can verify, and we will not guess at it.
What are class items and where do they drop?
Class items are Boss Rush rewards that drop from floor 40 onward: Cursed Shrine, Infinity Core and Shadow Monarch's Dagger. Equipping one overrides your entire skill set, so the item replaces the four abilities your class would normally use. That makes them the most disruptive single reward in the game.
Can you run all three Boss Rush lines at once?
This is not documented. No source we trust states whether the Sukuna, Gojo and Asta lines share progress, run in parallel, or have to be cleared one at a time from floor one. Several competing wikis assert an answer without evidence, so we leave it open.
Is Boss Rush the same as Challenge Dungeon?
No. They are listed as two separate modes in the official Roblox game description. Boss Rush is floor-based over 100 floors with three boss lines, while Challenge Dungeon is wave-based, unlocks at level 55, and puts a boss every ten waves. Challenge Dungeon is the main source of Aspect Gems, Heavenly Fragments and Exotic materials.