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Duviri and The Circuit Guide (2026): Spirals, Decrees and Incarnon Rewards

Spirals, Decrees, Circuit tracks and Pathos Clamps

Last Updated on September 11, 2026

The short answer

Duviri is three things. The story Spirals (Experience or the faster Lone Story) pay Pathos Clamps and Kullervo’s Bane. The Circuit hands you a random loadout and pays one Warframe a week. Steel Path Circuit pays two Incarnon adapters a week. Grab every Decree, finish the Orowyrm, and spend the Clamps at Acrithis.

Reviewed September 10, 2026, current through Update 43.5. Iceblade of Narin lands September 23 and is not reflected yet; this page is re-checked after every major patch.

Mode	Play it for
Lone Story	The fastest Orowyrm kill: Pathos Clamps and Kullervo’s Bane
Duviri Experience	The full Spiral with side content, Enigmas and Kullervo’s Hold
The Circuit	A random loadout and one chosen Warframe’s parts across the weekly track
Steel Path Circuit	Two Incarnon Genesis adapters a week at tiers 5 and 10

What you need first

Requirement	Why
The Duviri Paradox quest	A required main quest at the Saturn to Uranus Junction; it opens every Duviri mode and Teshin's Cave.
Steel Path Circuit	Needs Steel Path unlocked on the star chart plus the Experience, Lone Story and one full normal Circuit run.

How Duviri works

Five Spirals (Joy, Anger, Envy, Sorrow, Fear) rotate every two hours and change the world, the damage type on offer and the courtier you face.
Decrees are picked one of three after each stage or from three Decree Fragments on the map; they stack for the whole session and vanish when you leave.
You play the Drifter in the open world; Warframe portals swap you into your frame, and the Undercroft stages are Warframe only.
The Orowyrm ends a Spiral: open its three Pathos Valves on the body, then finish the head. It pays Pathos Clamps.
Kullervo's Hold appears in Anger, Sorrow and Fear Spirals; his Bane pays out when you finish that Spiral's Orowyrm.
Circuit progress resets Monday 00:00 UTC; each stage cleared moves you up the ten-tier track.
Enemy level in the Circuit caps at 9999, so an endless run is a fixed difficulty past that point.

A Circuit week, step by step

Talk to Teshin in his cave and pick Normal or Steel Path.
Choose your target: one of the offered Warframes on Normal, two of the offered Incarnon adapters on Steel Path.
Take one of the three random Warframes and three random weapons on offer. You may not own them; that is the point.
Clear Undercroft stages: Exterminate, Survival, Defense, Excavation, Void Flood, Alchemy, and the rest.
Grab all three Decree Fragments on every stage before extracting.
Extract when the loadout stops working; progress banks, the run does not have to be endless.
Claim tiers at Teshin: Warframe parts at 2, 5, 8 and 10 on Normal; adapters at 5 and 10 on Steel Path.
Repeat until the track is done, then wait for Monday.

Decrees worth taking every time

Decree	Why
Irresistible Bombardment	Fire rate stacks per shot; snowballs on any automatic weapon
Ranger's Reload	Rolling reloads the weapon, so the fire-rate snowball never stops
Between the Eyes	Big damage for a few seconds after a headshot
Vicious Barb	Rare: doubles critical damage outright
Twofold Torment	Rare: doubles status damage
Duelist's Advantage	Huge damage on the first shot after a reload; pairs with Ranger's Reload

What Acrithis sells

Pathos Clamp wares: Orokin Reactors and Catalysts, Exilus and Arcane adapters, Forma blueprints, veiled Rivens.
Kullervo's Archive: Kullervo's blueprint and parts, and the Rauta, for Kullervo's Bane.
Enigma Archives: Duviri decorations for Enigma Gyrum.
The full shop costs well over a thousand Clamps; treat it as a long farm, not a weekend.

Rewards

Reward	From	Note
Warframe parts	Normal Circuit, tiers 2, 5, 8, 10	One chosen frame per week from the rotating offer
Incarnon Genesis adapters	Steel Path Circuit, tiers 5 and 10	Two of the five offered that week; the rotation cycles back around
Steel Essence, Arcanes, Forma, Rivens	Both tracks, other tiers	The filler tiers are worth claiming
Pathos Clamps	Orowyrm kills	Acrithis currency for adapters, reactors, catalysts and Kullervo
Kullervo's Bane	Kullervo's Hold, paid at Spiral end	Buys Kullervo and the Rauta from Acrithis
Enigma Gyrum	Enigma puzzles in the open world	Duviri decorations

Frames that carry a random Circuit loadout

SarynNukes any stage

OctaviaBuffs and clears

WispSustain

NidusTank

RevenantCannot die

KullervoThe Duviri frame

Frame	Role	Why
Saryn	Nukes any stage	Spores scale off enemy density; the weapon roll barely matters.
Octavia	Buffs and clears	Mallet and Amp make three strangers' random guns work.
Wisp	Sustain	Reservoirs keep a squad with random weapons alive and fast.
Nidus	Tank	Stacks make him one of the tankiest Steel Path Circuit picks.
Revenant	Cannot die	Mesmer Skin does not care what weapons you rolled.
Kullervo	The Duviri frame	Farmed here, built here, and his teleport-heavy kit thrives on Decrees.

Tips that save runs

Lone Story when you only need the Orowyrm; the Experience when you want Kullervo, Enigmas and the side rewards.
Three Decree Fragments per stage. Missing one is a permanent hole in the run's power curve.
Pick the week's Warframe early so aborted runs still count toward it.
Fight Kullervo before the Orowyrm, not after; the Bane needs the Spiral finished.
Gear and companions are off in the Circuit, so take the healing and energy Decrees you would normally skip.
The Steel Path adapter rotation comes back around; wait for the weapon you want instead of buying it.

Mistakes that waste runs

Expecting Kullervo's Bane from the Kullervo fight itself.
Extracting with Decree Fragments still on the map.
Running the Circuit for a frame you already own.
Trying Steel Path Circuit before finishing the normal Circuit, Lone Story and the Experience.

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