| Theme | Intro | Synopsis | Nodes | Collectibles | Medals | OST | Guide | Facts |
Integrated Strategies #5: Sarkaz's Furnaceside Fables is the fifth theme of the namesake roguelike game mode in Arknights.
Additions:
Plan).
Changes:
to promote them as usual. to recruit and 1 to promote.
New mechanics: Mark of Epoch
New devices: Spines of Epoch
New enemies:
| Normal |      |
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| Elite |        |
| Boss |              |
Additional information:
| “ | Delve deeper into the stories to face harsher trials | ” |
a = (1 + b)c (a is the total buff; b is the buff percentage; c is the floor number).
| Level | Description | Buff | Epoch | Toil | Score |
|---|---|---|---|---|---|
| Facing Souls | Bravely tell your story
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0% | Formative | Light | 100% |
| Facing Souls 1 |
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0% | Formative | Light | 105% |
| Facing Souls 2 |
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0% | Formative | Light | 110% |
| Facing Souls 3 | Spines of Epoch and Spike of Lament have +20% HP. | 0% | Formative | Light | 115% |
| Facing Souls 4 | Elite and boss enemies have +20% HP. | 0% | Formative | Light | 120% |
| Facing Souls 5 | No additional handicaps
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1% | Formative | Standard | 125% |
| Facing Souls 6 | No additional handicaps
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2% | Expansional | Standard | 130% |
| Facing Souls 7 | Elite and boss enemies have +10% ATK. | 3% | Expansional | Standard | 135% |
| Facing Souls 8 | Starts with -2 Life Point cap. | 5% | Expansional | Standard | 140% |
| Facing Souls 9 | Friendly units take +30% Necrosis Damage. | 6% | Expansional | Standard | 145% |
| Facing Souls 10 |
|
7% | Expansional | Standard | 150% |
| Facing Souls 11 | No additional handicaps
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8% | Expansional | Heavy | 150% |
| Facing Souls 12 | No additional handicaps
|
10% | Flourishing | Heavy | 150% |
| Facing Souls 13 |
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13% | Flourishing | Heavy | 150% |
| Facing Souls 14 |
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16% | Flourishing | Heavy | 150% |
| Facing Souls 15 |
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20% | Flourishing | Heavy | 150% |
| Facing Souls 16 | Vertical movements cost +1 .
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21% | Flourishing | Heavy | 150% |
| Facing Souls 17 | Obtains a random cursed Collectible when entering 3F. | 22% | Flourishing | Heavy | 150% |
| Facing Souls 18 | No additional handicaps
|
22% | Flourishing | Collapse | 150% |
Certain Squads can be upgraded in Historical Reconstruction; the upgraded effect is denoted in brown while those added in Expansion II are denoted in pink.
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Improvisation Squad Gains a random Collectible when entering a new floor.
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Soul Escort Squad
Unlock condition: Unlock the "Inspiration Surge" Historical Reconstruction node.
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Erudite Squad Unlock condition: Unlock the "Lorecraft" Historical Reconstruction node.
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Blueprint Squad
Unlock condition: Unlock the "History Explorer" Historical Reconstruction node.
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Leader Squad
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Gathering Squad
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Support Squad Starts with +20/+30(VI)
 and +2 . |
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Spearhead Squad Starts with only 1
 (the Life Point cap stays the same), but friendly units have +15%/+20%(IX) maximum HP and ATK. |
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Tactical Assault Squad
Unlock condition: Complete a run with at least 5 Guards or Vanguards recruited.
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Tactical Fortification Squad
Unlock condition: Complete a run with at least 5 Defenders or Supporters recruited.
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Tactical Ranged Squad Unlock condition: Complete a run with at least 5 Medics or Snipers recruited.
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Tactical Destruction Squad
Unlock condition: Complete a run with at least 5 Casters or Specialists recruited.
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First-Class Squad 5★ Operators are automatically promoted when recruited.
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Ingots Squad Added in Expansion I.
Unlock condition: Spend 20
in Rogue Traders across all runs since Expansion I. |
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Collection Squad Added in Expansion I.
Unlock condition: Obtain 10 Collectibles across all runs since Expansion I.
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Mimic Squad Added in Expansion I. See below for more information Unlock condition: Complete a run since Expansion I.
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Professional Squad Added in Expansion II.
Unlock condition: Complete a run since Expansion II.
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Unlike other Squads, the Mimic Squad's effect is randomly chosen from 25 effects listed below and is always a combination of effects from two other Squads from previous I.S. themes as well as those of Furnaceside Fables'.
| List of possible Mimic Squad effects | |
|---|---|
| #1 | 4★ and higher Guards cost -2 to recruit and -1 to promote; the first Guard (except Temporary Recruitment ones) recruited will be automatically promoted (if able); starts with  Survivor Contract.
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| #2 | 4★ and higher Caster cost -2 to recruit and -1 to promote; the first Caster (except Temporary Recruitment ones) recruited will be automatically promoted (if able); starts with Survivor Contract.
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| #3 | 4★ and higher Specialist cost -2 to recruit and -1 to promote; the first Specialist (except Temporary Recruitment ones) recruited will be automatically promoted (if able); starts with Survivor Contract.
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| #4 | 4★ and higher Sniper cost -2 to recruit and -1 to promote; the first Sniper (except Temporary Recruitment ones) recruited will be automatically promoted (if able); starts with Survivor Contract.
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| #5 | 4★ and higher Defenders and Snipers cost -2 to recruit and -1 to promote; the first Defender/Sniper (except Temporary Recruitment ones) recruited will be automatically promoted (if able); Defender/Sniper Rec. Vouchers are more likely to be available.
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| #6 | 4★ and higher Casters and Supporters cost -2 to recruit and -1 to promote; the first Caster/Supporter (except Temporary Recruitment ones) recruited will be automatically promoted (if able); Caster/Supporter Rec. Vouchers are more likely to be available.
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| #7 | 4★ and higher Specialists and Vanguards cost -2 to recruit and -1 to promote; the first Specialist/Vanguard (except Temporary Recruitment ones) recruited will be automatically promoted (if able); Specialist/Vanguard Rec. Vouchers are more likely to be available.
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| #8 | 4★ and higher Guards and Medics cost -2 to recruit and -1 to promote; the first Guard/Medic (except Temporary Recruitment ones) recruited will be automatically promoted (if able); Guard/Medic Rec. Vouchers are more likely to be available.
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| #9 | 4★ and higher Guards cost -2 to recruit and -1 to promote; the first Guard (except Temporary Recruitment ones) recruited will be automatically promoted (if able); friendly units have +15% HP and ATK.
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| #10 | 4★ and higher Casters cost -2 to recruit and -1 to promote; the first Caster (except Temporary Recruitment ones) recruited will be automatically promoted (if able); friendly units have +15% HP and ATK.
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| #11 | 4★ and higher Specialists cost -2 to recruit and -1 to promote; the first Specialist (except Temporary Recruitment ones) recruited will be automatically promoted (if able); starts with +20 .
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| #12 | 4★ and higher Snipers cost -2 to recruit and -1 to promote; the first Sniper (except Temporary Recruitment ones) recruited will be automatically promoted (if able); starts with +20 .
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| #13 | Operators cost -1 to recruit and promote; more likely to obtain a Collectible from operations.
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| #14 | Operators cost -1 to recruit and promote; friendly units have +15% HP and ATK.
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| #15 | Operators cost -1 to recruit and promote; starts with Survivor Contract.
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| #16 | Starts with +20 and Survivor Contract.
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| #17 | Starts with +20 ; +5 when entering a new floor; refreshing a node does not expend Plans and will turn it into a Rogue Trader.
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| #18 | Starts with +20 ; +2 Inspirers when entering a new floor.
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| #19 | More likely to obtain a Collectible from operations; +2 Inspirers when entering a new floor. |
| #20 | More likely to obtain a Collectible from operations; friendly units have +15% HP and ATK. |
| #21 | Operators cost -1 to recruit and promote; +2 squad size and Unit Limit.
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| #22 | More likely to obtain a Collectible from operations; interpreting Thoughts are more likely to award a Collectible and will always award a (Super) Rare Collectible if it would award one. |
| #23 | 5★ Operators are automatically promoted when recruited; obtains a random Advanced Rec. Voucher when recruiting Operators at the start. |
| #24 | Operators cost -1 to recruit and promote; obtains a random Advanced Rec. Voucher when recruiting Operators at the start.
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| #25 | Promoting Operators are free; obtains a random Advanced Rec. Voucher when recruiting Operators at the start. |
| You overcame at least two floors in your last exploration. You'll be able to receive more assistance this time. | |
|---|---|
| More supplies | Starts with +3 Objective Shields. |
| Give a speech before departing | Starts with +2 .
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| Reserve fund support | Starts with +5 .
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| Purchase a Collectible | Starts with a random Collectible but with 0 .
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| Reclaim loot | Starts with a random Collectible but with -1 .
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| Just grab something random | Starts with  Hot Water Kettle.
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| Ready your mind | Starts with +2 .
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Operation Everyone has their weapons drawn. They're definitely not here to negotiate. Self-explanatory.
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Emergency Operation Some violence may well exceed your expectations, a very common occurrence. An ISW-NO operation with various handicaps, similar to that of Challenge Modes, and always awards a Collectible when cleared.
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Dreadful Foe Criminals, ruffians, and the damned... You're in trouble. An operation featuring I.S.-exclusive bosses, which can be distinguished with the ISW-DF code.
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Encounter New friends, old rivals... Strange encounters never age. Only scars stand the test of time. A random event.
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Wish Fulfilled There are many ways of making a wish, but the wish itself is almost always the same thing. Gives a Collectible of the player's choice.
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Safe House Nobody will bother you here, and there's plenty of food and water. No need to be so tense all the time. Gives a free reward of the player's choosing from three of the options listed below:
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Downtime Recreation A little indulgence in life's simpler pleasures goes a long way in fighting the monotonous and the harrowing on your long road ahead. A mini-game where the player spend resources for additional resources or even Collectibles depending on the player's fortune.
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Rogue Trader Neither an ally nor an enemy. Some people like to sit on the fence. See Rogue Trader for more information.
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Prophecy The choice lies before us, the outcome already set. The player makes a decision which influences the ending that would be reached.
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False to Truth The changes are so remarkably real that you think you can tell true from false. Can interpret Thoughts to receive various rewards, expending them in the process.
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Face-Off This has happened to the Sarkaz too many times to count. Can attempt a 1-vs-1 or 2-vs-2 challenge battle (explained below).
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Lost and Found The void of helplessness will be filled by the joy and satisfaction of gain. Can exchange a Collectible with a different one.
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Scout Someone will always have to take the first step, to show the way for those who come after. Can send off an Operator until the start of the next floor, at which the Operator will be automatically promoted (if not already) and the player receives rewards including Thoughts. Otherwise, the player will receive +2
.
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Possibility Throw your dreams into the frame, and transform your fragmented ideas into brand new plans. Can enter the secret floor. Otherwise, the player will receive 1 Plan.
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When a Face-Off operation starts, the player must choose one of three opponents to fight with their difficulty being indicated by a colored icon above them: gray for the easiest opponent, blue for the moderately difficult opponent, and orange for the most difficult opponent. In 1-vs-1 Face-Offs, each opponent is made up of a single enemy; in 2-vs-2 Face-Offs, each opponent is made up of two enemies, all of which are randomly chosen and the player can refresh the opponents once per Face-Off operation. Clicking on an opponent will display its tooltip.
To choose the opponent, deploy the Operator(s) in the Face to Face in front of the opponent the player wish to fight. Once the Operator(s) are set, the player may begin the Face-Off by clicking the "Begin battle" button on the bottom-right corner.
During the battle phase, all Operators but the one(s) used to choose the opponent will be removed from the Deployment Waiting Zone,⁎ so choose the challenger(s) carefully! Support Items are unaffected and can be used as normal, however.
The Face-Off operation has a time limit and the outcome is decided as follows.
The player receives a reward for winning the Face-Off and if it ends in a draw, which is accounted for on the operation's result screen.
 1F: Furnace Origin
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Verse one. Familiar warmth fades into the darkness as reality erodes at every turn. A Sudden Loss for Words It seems that both you and your Sarkaz ancestors are too attached to the furnace's warmth, and entered the faraway land of dreams. |
 2F: Wrought Ironroots
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Line two. The winding past connects to an unprecedented future as the spores of imagination grow within every pipe. A Sudden Loss for Words Every pipe seems to branch off into three, yet their ends are connected. No words seem to describe them. |
 3F: Ashforged Ruins
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Paragraph three. Do you recognize this city//wreck//palace//village? A Sudden Loss for Words The city//wreck//palace//village has rejected you, and will no longer shift to your persuasions. |
 4F: Probable Divergence
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Section four. At imagination's peak, Kazdel is both bountiful and hollow. It craves, it hungers, always wanting more, oblivious to the encroaching boundaries. A Sudden Loss for Words You crossed one boundary after another, chose one Kazdel after the other, and all of them accepted you |
 5F: Border of Truth
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Chapter five. The end, unity, and stability—all torn asunder. Subverting common sense is the only path to a new chapter. A Sudden Loss for Words "Come back." |
 6F: Radiant Zenith
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Article six. Rebirth ushers in an immeasurable imagination, both unexpected and reasonable. Accept the curse//blessing. A Sudden Loss for Words You fall before the truth. Its might is so overwhelming that you can only run back to it. |
 6F: Temple of Shattered Shackles
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Article six. The Dharma has been transmitted, and to hold it is to reach ultimate freedom. But can thusness be followed, be sought? If only with great difficulty, can it be held on to? A Sudden Loss for Words "A lotus petal falling in the water harms not its root. Obsess not over it." |
 Special: Eternal Rest
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Finale. This is where every story ends. The light dims before your eyes, and the sound of the furnace in your ears is extinguished. A Sudden Loss for Words After the sound of the furnace goes out, the storyteller falls silent. |
 Secret: Bizarre Fragment
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Recorded history always hopes to be enriched by stories, just as water longs to be filled with reflections. A Sudden Loss for Words The water ripples with fusing thoughts, expanding the borders wide open once more. |
| Additional information | |
|---|---|
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To enter the Bizarre Fragment, choose "Fill the gap with your plans" in a Possibility node (only appears after the "Eldritch Cognition" Historical Reconstruction node is unlocked) or Prophecy: Truth to be Told, or "Try to understand the city" in Encounter: Shifting City (both of which costs 2 ), or through the effect of 
Arch Glyph.
The Bizarre Fragment has one of the following layouts.
The Bizarre Fragment entered from Encounter: Shifting City is treated as if it was 4F (thus the player will enter 5F after clearing it, even if the Fragment is entered from 3F or earlier) and shares the same layout, but there will be no vertical routes other than Safe Houses after being consolidated to §5 through Impression Restoration.
The player will receive one of the following Collectibles when entering the Bizarre Fragment, which applies a handicap that is only effective there. Each Collectible will only be given once per run if the Fragment is entered multiple times.
Blood Tax Mystery: Friendly units and enemies have -35% HP
Crystal Mystery: Friendly ground units have +600 DEF but will be Frozen for 15 seconds after deployment
Suspicion Mystery: Originium Ingot gains and Life Point losses are doubled
Fabrication Mystery: DP generation rate during operations halved but have +50 initial DP
Foresight Mystery: Command EXP gain +20% but enemies have a 10% chance to spawn a Dreadkaz when defeated⁎
Sigil Mystery: Automatic SP recovery rate -50% but friendly units have +30 initial SP
Tranquil Mystery: Friendly units and enemies have -25% ATK
Silk Bond Mystery: Operators have +50 ASPD if there are no others in the surrounding 8 tiles, otherwise they lose 150 HP every second (which is non-lethal)Once the Bizarre Fragment is cleared, the player will be taken back to the floor where they entered it and proceed into the node succeeding the Possibility the Fragment is entered from (unless the Bizarre Fragment was entered from Encounter: Shifting City).
| Floor | (Emergency) Operation | Dreadful Foe | ||
|---|---|---|---|---|
| EXP | Ingot | EXP | Ingot | |
| 1F | 10 (12) | 1 (2) | – | |
| 2F | 12 (18) 16 (20) | 2 3 (5) | – | |
| 3F | 13 (25) 18 (36) | 2 (3) 3 (5) | 33 | 5 |
| 4F | 15 (30) 20 (33) | 3 5 | – | |
| 5F | 20 (36) 25 (39) | 3 (5) 5 (6) | 51 | 6 |
| 6F | 20 (36) | 5 | 72 | 5 |
| Special | The special floor only has one operation: No Room for Rejection, which ends the run once cleared | |||
| Secret | Same as the operation's floor | 33 | 3 | |
| Additional information | ||||
| ||||
| Operation | EXP | Ingot |
|---|---|---|
| Face-Off: The Boat Home | 5 | 1 |
| Failed Dare | 5 | 3 |
| Property Dispute | 10 | 2 |
| Signal Light | 10 (25) | 2 |
| Face-Off: Eye For an Eye | 13 | 3 |
| Narrative Offer | 15 | 2 |
| Illusory Heist | 15 (25) | 2 |
| Face-Off: Narrow Path | 16 | 3 |
| Legacy | 18 (25) | 2 (3) |
| Revenge of the Toys | 20 | 2 |
| Face-Off: Twin Gargoyles | 22 | 3 |
| Beside The Battlefield | 25 | 2 |
| Duck-Speed Highway | 25 (36) | 5 |
| Additional information | ||
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| Level | Req. EXP | Total EXP | Bonuses |
|---|---|---|---|
| 1 | – | 0 | – |
| 2 | 10 | 10 |
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| 3 | 24 | 34 |
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| 4 | 36 | 70 | Gains 5 and Hope cap +5
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| 5 | 40 | 110 |
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| 6 | 55 | 165 |
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| 7 | 65 | 230 | Gains 6 and Hope cap +6
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| 8 | 75 | 305 |
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| 9 | 90 | 395 |
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| 10 | 95 | 490 |
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| List of Monthly Contracts in Sarkaz's Furnaceside Fables | |
|---|---|
| Rank | Contract |
| A | Furnace Echoes Complete a run.
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| A | Generous Investor Invest 30 across all runs.
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| A | Gopnik Hitman Defeat Gopnik 8 times across all runs.
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| A | Rodent Bane Defeat Fatty 8 times across all runs.
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| A | Stolen Tears Defeat the Crying Thief 8 times across all runs.
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| B | Amplified Impression Amplify nodes through Impression Restoration 10 times across all runs.
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| B | Constant Surprise Enter 24 Encounters across all runs.
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| B | Friendly Aid Recruit Support Operators 8 times across all runs.
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| B | Go-Getter Obtain 4 Tactical Props across all runs.
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| B | Perfectionist Clear 12 operations perfectly (without losing Life Points) across all runs.
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| B | Recreationist Enter 8 Downtime Recreations across all runs.
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| B | Skilled Negotiator Enter a Lost and Found.
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| B | Survivor Defeat 4 bosses in Dreadful Foes across all runs.
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| B | Trial of Thorns Clear 8 Emergency Operations across all runs.
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| C | Battlefield Veteran Defeat 500 enemies across all runs.
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| C | Big Buyer Buy 10 items from the Rogue Trader across all runs.
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| C | Eager Explorer Enter 50 nodes across all runs.
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| C | Deploy Spree Deploy Operators 100 times across all runs.
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| C | Elite Promoter Promote 10 Operators across all runs.
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| C | Hope Spreader Spend 75 to recruit and promote Operators across all runs.
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| C | Ladder Climber Clear 15 floors across all runs.
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| C | Networker Recruit 10 Temporary Recruitment Operators across all runs.
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| C | Novel Path Move through nodes vertically 10 times across all runs.
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| C | Operator Assembly Recruit 35 Operators across all runs.
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| C | Originium Broker Spend 100 across all runs.
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| C | Relic Relisher Obtain 35 Collectibles across all runs.
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| C | Strategic Genius Raise the Command Level 15 times across all runs.
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| C | Truth Reader Interpret Thoughts 10 times across all runs.
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Unofficial English translations provided by PHOTON563.
| The End? |
|---|
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| Condition |
Choose "Owwie!" in Prophecy: Final Page that appears as the second-to-last node in 5F and simply clear the Dreadful Foe that succeeds said Prophecy, Emergency Lecture (or Cognitive Correction if the player has the  Rolling Ancestors).
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| Twin Crowns |
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     Your bold assumptions and imagination have brought this ending to life. Your soul quivers with excitement, your mind in a trance, leaving you in awe as you slowly comprehend what has transpired.
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| Condition |
Complete a run with The End? ending and do the following steps in a single run:
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| City of Angels |
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| Condition |
Complete a run with The End? ending and do the following steps in a single run:
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| Wisdom of Kaśjñāna |
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| Condition |
Complete a run after Expansion I and do the following steps in a single run:
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| Impeccable Day |
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| Condition |
Complete a run after Expansion II and do the following steps in a single run:
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When a Sarkaz's Furnaceside Fables run ends, the run's rollback (which can be skipped and viewed again from the result screen) will appear (after the ending if the run is completed), which lists the player's Operators in the run under "Explorer List" and logs the player's actions throughout the run.
| List of logged actions |
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After the rollback ends with the message "Rollback Complete", the player will be taken into the result screen showing the summary of the run as follows:
| Completed | You, Dr. {nickname} used the {Squad} and spent xx hrs xx min xx sec on yyyy/mm/dd hrs:min:sec Witnessed the {ending} |
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| Completed in Facing Souls 1+ | You, Dr. {nickname} used the {Squad} and spent xx hrs xx min xx sec on yyyy/mm/dd hrs:min:sec Witnessed the {ending} on {difficulty level} |
| Failed | You, Dr. {nickname} used the {Squad} and spent xx hrs xx min xx sec on yyyy/mm/dd hrs:min:sec Ended your journey at {floor name} |
| Floors cleared |
The secret floor is counted as one floor and if the player cleared the secret floor multiple times, only a maximum of 7 floors that will be counted for this scoring.
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|---|---|
| Steps taken | 1 × no. of nodes entered |
| Normal battles fought | 10 × no. of Operations cleared |
| Operators recruited | 2 × no. of Operators recruited |
| Items obtained | 5 × no. of items obtained (Collectibles and Thoughts; still counts if the former is traded away in Lost and Found and the latter is sold at the Rogue Trader) |
| Boss battles fought | 30 × no. of Dreadful Foes cleared |
| Elite battles fought | 20 × no. of Emergency Operations cleared |
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