Dungeon Brakmar
Black Rat's Moumousetrap
Level 110 dungeon in the sewers of Brakmar, at [-28,37]: five rooms and a boss that punishes your heals and your Earth hits, the Black Rat. Quests to start, map of each room, strategy, monsters, achievements, and loot.
![Black Rat's Moumousetrap: the dungeon entrance, at [-28,37] (Bowels of Brakmar)](/wp-content/uploads/dofus/donjon-sousouriciere-du-rat-noir-entree-grand.webp)
Quests linked to Black Rat's Moumousetrap
Two quests require defeating the Black Rat “on a specific map”, meaning in its room: Trapped Like A Rat, open to everyone, and When Threats Don't Work for Brakmarians. Accept them before entering: a fight won without the quest in progress does not count.
Stanis Ast has disappeared in the Moumousetrap. Check the sewer traps, find Stanis in the dungeon, defeat the Black Rat in a single fight, then handle the exchange between the Black Rat and a Depressed Militia Member.
- Start
- Dexter Minator, Brakmar
- Prerequisites
- Level 90
Rat Shio Pustule3 pustules and 5,343,000 XP
Defeat the Black Rat in its room, then use its antidote. Oto Mustam's investigation first goes through the Bonta tower and the Bagrutte Inn, on the trail of a mysterious X.
- Start
- Oto Mustam, Brakmar militia
- Prerequisites
- Level 110 and Boolanthropy
For later
The Black Rat is the last step. Kris Tericks sends you to defeat six guardians, from the Ancestral Abraknyde to the Black Rat: for each one, win the fight and then find the dungeon exit before going back to see him.
- Start
- Kris Tericks, Cania Fields
- Prerequisites
- The Master's Henchmen
Moowolf Magic Testiclesone resource from each boss and 30,420,000 XP
The Black Rat's soul is required. The Ochre Dofus quest asks for the souls of many dungeon guardians: capture this one with a Soul Stone for Big Souls.
- Start
- Otomai, Otomai Island
- Prerequisites
- Level 40
Ochre Dofusat the end of the 19 steps
During events
- Tiwagrum Simulation
Tiwagrum can designate the Black Rat as the guardian to defeat. Amakna Village, .
The 5 rooms of Black Rat's Moumousetrap
Five rooms. Rooms 1, 3, and 5 are loaded with obstacles: use them to break the lines of sight of Radioactivity, Raffia, and Black Plague. For each room: the scenery, then the tactical view with the starting cells (blue: you, red: the monsters). Tap an image to enlarge it.
Room 1


Room 2


Room 3


Room 4


Room 5 — the Black Rat


Defeat the Black Rat
The heal that kills
Black Plague marks a character for 6 turns: if they receive a heal, they take half of the Black Rat's current HP as Air damage. Never heal the target of Black Plague. Life steal doesn't count as a heal: use it.
Level 110
4,400 HP
10 AP
4 MP
- Resistances (%)
Earth 50%
Fire -20%
Water 20%
Air -20%
Neutral 5%
Low HP, but two spells that turn a fight around: Black Plague punishes heals, KilleRat kills on contact the targets hit with Earth or Neutral. Korrattion fully heals an ally hit with those elements. Weak point: Air and Fire, at -20%; 50% Earth resistance.
KilleRatAround the Black Rat: any marked target that takes Earth or Neutral damage dies. Cooldown 7 turns, so give it a summon.
KorrattionAn ally of the Black Rat is fully healed by Earth or Neutral hits for 3 turns. Change element or target.
FlurryLife steal in all five elements on contact, twice per turn.
Black PlagueSix turns of marking: any heal received deals half of the Black Rat's current HP as Air damage. Life steal triggers nothing.
The four-step strategy against the Black Rat
Stay well back. KilleRat is only cast around the Black Rat itself: never end your turn in contact with the Black Rat. A summon with strong lock (Bloqueuse, Sacrificed, Pandawasta) can take the spell in your place, and its 7-turn cooldown leaves you in peace for a good while.
Air and Fire, never Earth. It loses 20% to Air and Fire, but resists Earth by 50%. Leave your Earth characters aside in the final room: Korrattion fully heals the targeted ally if it takes Earth or Neutral damage. Check the states before each attack.
Handle Black Plague. Spot the marked character and cut them off from all your heals, area heals included, for 6 turns. They heal through life steal, which triggers nothing. Your heals are kept for the others.
Kill the Black Rat fast. Its spells are the most dangerous in the fight: kill it first if your damage allows it, in Air and Fire, from a distance. Otherwise, start with the Shrynk Rat and the Flatt Rat, which heal and boost the pack.
KilleRat, the instant kill
KilleRat places a one-turn state on all enemy entities in a cross around the Black Rat. A target under KilleRat that takes Earth or Neutral damage dies. If a character survived the Black Rat's turn with this state, keep them away from any source of Earth or Neutral damage until their next turn.
The spell only comes back every 7 turns: giving the Black Rat a summon, or a sacrificed character, solves the problem for a long time.
Korrattion, the elemental trap
Korrattion protects an ally of the Black Rat for 3 turns: every Earth or Neutral hit fully heals it. Recast every 2 turns up to 8 range, it can target any monster. Hit it with Air, Fire, or Water, or switch targets while the effect lasts.
The monsters of Black Rat's Moumousetrap
Five level 102 rats, around 2,000 HP, that heal, teleport, and remove AP, MP, or range. The resistances in red are their weaknesses.
In which order to kill the monsters
- Shrynk Rat — it heals its allies in an area, Black Rat included, and summons.
- Flatt Rat — it reduces your Heals Received, removes range, and boosts the pack.
- Rat Lly, then Rat Phink — they teleport onto you and break your distance.
- Rat Shio — resistant across the board, it is mostly a nuisance on contact: slow it down.
Level 102
1,800 HP
9 AP
5 MP
- Resistances (%)
Earth 2%
Fire 13%
Water -20%
Air 3%
Neutral 2%
Rapiat hits in a square and heals allies in the same area: don't let it target a character next to the Black Rat. Rambling summons a Splat Rat, which gives MP. Weak to Water: your first target among the rats.
-
Rapiat
Square-area damage and healing of allies in the same area. Move away from the Black Rat when it is your target.
-
Rambling
Summons a Splat Rat on contact, which gives 1 MP to its nearby allies and hits in melee.
Ratatouille
Level 102
2,000 HP
9 AP
4 MP
- Resistances (%)
Earth 7%
Fire -18%
Water 11%
Air 8%
Neutral -8%
Raw Scratch halves your Heals Received and hurts those in contact with you, Radioactivity removes 3 range and poisons. Radar boosts the pack's damage at the cost of its resistances. Weak to Fire.
Raw ScratchHeals Received halved for 2 turns, plus damage to those in contact with the target.
RadioactivityRemoves 3 range for one turn and poisons: Air damage, then Neutral on the next turn.
RadarThe rats lose a bit of resistance but gain damage for 2 turns: the time to hit them.
Level 102
2,100 HP
10 AP
4 MP
- Resistances (%)
Earth -15%
Fire 3%
Water 14%
Air 4%
Neutral -6%
Report teleports it behind you and pushes around it, Reminder pulls you 3 cells while applying Gravity, and Raffia removes 2 AP. Everything is cast in a line, without line of sight. Weak to Earth, but beware of Korrattion in the Black Rat's room.
-
Report
The Rat Lly teleports behind you, then pushes enemies around it back 3 cells.
ReminderPulls 3 cells and applies Gravity for 2 turns, from 3 to 6 range in a line.
RaffiaRemoves 2 dodgeable AP, in a line and without line of sight, twice per turn.
Level 102
2,300 HP
9 AP
5 MP
- Resistances (%)
Earth 6%
Fire 2%
Water -5%
Air -15%
Neutral 12%
Proximity teleports it 3 range away, without line of sight, and Craggyify hits hard on contact, removing flight. Refining places glyphs that boost melee damage. Weak to Air.
ProximityThe Rat Phink teleports up to 3 range, without line of sight, and becomes unmovable for one turn.
CraggyifyBig Neutral hit on contact and -20 flight: hard to escape afterward.
Refining
Level 102
2,200 HP
10 AP
5 MP
- Resistances (%)
Earth 20%
Fire 20%
Water 20%
Air 20%
Neutral 20%
20% resistant across the board, but it loses 10% resistance per Ransom state, which rises from 1 to 3 over the turns and then drops back. Dratnet removes MP around it and makes its targets lose resistances; Racking removes AP, Raptor removes range.
-
Dratnet
Neutral damage and -1 MP for 2 turns around the Rat Shio, plus a state that melts your resistances. Don't stay in contact with it.
Racking
Raptor
Preparing your run through Black Rat's Moumousetrap
A level 110 dungeon of medium difficulty, where the danger mostly comes from healing at the wrong time. People come for Trapped Like A Rat, the Brakmar quests, and the Ochre Dofus soul, with a Soul Stone for Big Souls (captures up to level 150).
How to enter Black Rat's Moumousetrap
The entrance is in the Bowels of Brakmar, the city's sewers, at ; the nearest zaap is The Breastplate's . There are three ways to open it: a Black Rat's Moumousetrap Key (consumed), the key ring if it is registered there, or the automatic group search.
Crafting the Black Rat's Moumousetrap Key
It is crafted at a handyman. Five ingredients drop from the dungeon's rats: Rat Lly's Old Book, Flatt Rat's Ear, Shrynk Rat's Magic Skull, Rat Phink's Rusty Pipe, and Dried Meat. Grey Sea Bream (fishing), Edelweiss, and Rye (harvesting) complete the recipe.
| Ingredient | Quantity | Level |
|---|---|---|
| 2 | 110 | |
| 2 | 110 | |
| 2 | 110 | |
| 2 | 110 | |
| 2 | 110 | |
| 2 | 110 | |
| 3 | 100 | |
| 3 | 100 |
Which team to bring against the Black Rat
Air and Fire characters. The Black Rat loses 20% in these two elements and resists Earth by 50%. An Earth character remains useful against the pack in the first rooms, but becomes a risk against Korrattion.
A careful healer. Bring healing or protection, but save them for the characters without Black Plague. Life steal is your best ally for the marked target.
A summon with strong lock. Bloqueuse, Sacrificed, or Pandawasta in contact with the Black Rat: it takes KilleRat in your place, and the spell doesn't come back for 7 turns.
The classes that are comfortable here. Anything that hits from a distance in Air or Fire. The Sadida (Bloqueuse, Sacrificed) and the Pandawa (Pandawasta) offer the Black Rat a summon to cast KilleRat on. The Pandawa is also useful for Blitzkrieg, with Vulnerability, and for Impertinence, by carrying an ally into contact with a monster.
The six achievements of Black Rat's Moumousetrap
Each achievement gives 5,343,000 XP and 2 Black Rat Mane, and Duo doubles the XP; Sidekick gives 8,014,500 XP. Duo requires nothing more than the basic strategy.
| Achievements | Condition | Points | XP |
|---|---|---|---|
| Defeat the Black Rat in this boss's dungeon. | 10 | 5 343 000 | |
| Defeat the Black Rat in its dungeon by completing the “Blitzkrieg” challenge. | 10 | 5 343 000 | |
| Defeat the Black Rat in its dungeon by completing the “Ratch-Up” challenge. | 10 | 5 343 000 | |
| Defeat the Black Rat in its dungeon by completing the “Impertinence” challenge. | 10 | 5 343 000 | |
| Defeat the Black Rat in its dungeon by completing the “Duo” challenge. | 20 | 10 686 000 | |
| Defeat the Black Rat in its dungeon by completing the “Rats… literally or figuratively” challenge | 5 | 8 014 500 |
Blitzkrieg
Every enemy attacked must die before its next turn. You need enough damage to remove all of the Black Rat's HP in one turn, in Air and Fire. Boost yourself and increase its damage taken, for example with the Pandawa's Vulnerability, before starting. Open on it with the character who plays right after it: you will have the whole team's turn. Poisons act before the start of its turn and complete the challenge if they finish it off.
Impertinence
Every ally must end their turn next to an enemy. All the difficulty comes from KilleRat. Three counters: sacrifice a character or a summon in contact with it, then kill it before the 7-turn cooldown; stick to another monster and kill the Black Rat first, from a distance, before it casts KilleRat; or trap it in a corner between two or three of its henchmen, with enough lock, and focus it. A Pandawa can carry an ally into contact with a monster, and sticking to an enemy summon like the Splat Rat is enough.
Special: Ratch-Up
The Black Rat must take no damage before all the other enemies are dead. Kill the whole pack while staying away from the Black Rat, which must never be able to cast KilleRat. Watch your areas and your spreading effects so you don't hit it by accident.
Duo
Two characters maximum, fewer than 20 turns. No particular difficulty: the basic strategy is enough. Everything must be finished by the end of turn 19.
Sidekick: Rats… literally or figuratively
Four characters minimum, including a companion among Rapiat, Plunder, Ougicle, and Hulkrap. The basic strategy doesn't change. Keep the companion out of KilleRat's reach and don't heal them if they carry Black Plague.
Drops and loot of Black Rat's Moumousetrap
Base in-game rates, before Prospecting bonuses.
On the Black Rat
Black Rat ManeHair34 %
Nougat Rabmarac BarTreat6 %
Brakmarian Rat HairHair5,64 %
Fortunawa CookieTreat3,3 %
Bag of PepperContainer3 %
Dried CarrionMeat1,69 %
Al Howin GobtubbyCeremonial pet0,4 %
On top of that come 1 rare item at 0.065% each: Ratalda.
On the henchmen of the Black Rat
Dried MeatMeat · Rat Lly34 %
Rat Lly's Old BookMiscellaneous Resource · Rat Lly34 %
Flatt Rat's EarEar · Flatt Rat34 %
Rat Shio PustuleMiscellaneous Resource · Rat Shio34 %
Shrynk Rat's Magic SkullBone · Shrynk Rat34 %
Rat Phink's Rusty PipeCombat Resource · Rat Phink34 %
Brakmarian Rat HairHair · Rat Lly5,64 %
Fortunawa CookieTreat · Rat Lly1,1 %
Bag of PepperContainer · Rat Lly1 %
Capturing the soul of the Black Rat and the Ochre Dofus
One Soul Stone for Big Souls (captures up to level 150) is enough for the Black Rat. The soul is used for the Ochre Dofus quest An Eternal Harvest, which requires the soul of every dungeon guardian.
| Stone ingredient | Quantity |
|---|---|
| 10 | |
| 1 |
Black Rat's Moumousetrap as a guild Expedition
The Moumousetrap also exists as a Guild Expedition. There are no rooms: you go straight to the Black Rat, with no invulnerability or constraining mechanic. The danger is the enemies' enormous damage:
- the Black Rat applies stackable Air poisons to two targets per turn: they disappear if the target receives a heal, so heal the poisoned characters;
- a character marked by Memento Mori sees the Black Rat teleport onto them on the next turn, hit them, and make them unhealable for 2 turns: protect them beforehand;
- it also applies a 50% vulnerability and a black glyph that pulls toward its center;
- the Shrynk Rat hits in an area up to three times per turn and heals its allies in the area: move away from the Black Rat when it is your target;
- the Flatt Rat massively boosts the rats by reducing their resistances, the Rat Lly teleports onto you, the Rat Phink hits hard on contact;
- all monsters except the Black Rat have 50% Air resistance, and the Black Rat, with no invulnerability and few resistances, is quickly killed first: this is the best strategy, with healing or protection.
Where is Black Rat's Moumousetrap?
In the sewers of Brakmar, at . The nearest zaap is The Breastplate's .
What level should I be for Black Rat's Moumousetrap?
Level 100 minimum, 110 recommended. The Black Rat is level 110, with 4,400 HP.
Which quest should I do in Black Rat's Moumousetrap?
Trapped Like A Rat, at Dexter Minator's in Brakmar . Brakmarians add When Threats Don't Work, at Oto Mustam's.
What is Black Plague?
A 6-turn mark that turns every heal into big Air damage. Never heal the target; life steal doesn't trigger anything.
How do I avoid KilleRat?
Never end your turn in contact with the Black Rat. A summon with strong lock can take the spell in your place, and it then only comes back every 7 turns.
Can you play Earth against the Black Rat?
It is not recommended in the final room. It resists Earth by 50%, and Korrattion fully heals a monster hit with Earth or Neutral.
Which monster should you target first in Black Rat's Moumousetrap?
The Black Rat, if your damage allows it, in Air and Fire. Otherwise, start with the Shrynk Rat and the Flatt Rat, which heal and boost the pack.
Which stone should I use to capture the Black Rat?
One Soul Stone for Big Souls (captures up to level 150). The soul is used for the Ochre Dofus quest.
Can the Moumousetrap be done with two characters?
Yes, it is an achievement: two characters, fewer than 20 turns. The basic strategy is enough.
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