Duet Night Abyss’ Outsider — kit breakdown, best builds, how to get

Stealth, fang spikes, and an ultra-shield make this Anemo DPS a boss killer with quirks.

By Pallav Pathak 4 min read
Duet Night Abyss’ Outsider — kit breakdown, best builds, how to get

Outsider is a playable Anemo DPS who mixes stealth, reactive damage, and burst windows to punish bosses in Duet Night Abyss. His loop revolves around generating “Fang Spikes,” going invisible to set up, then cashing everything in to enter an empowered hunt state with hitstun immunity and an Ultra Shield. If you’re just getting started, install the game from the official site.

Outsider at a glance

Attribute Details
Element / Role Anemo / DPS with weapon damage focus
Weapons Dual Blades (melee) · Dual Pistols (ranged)
Signature loop Stealth to set up → generate Fang Spikes → Ultimate to enter Relentless Hunt (hitstun immunity, ATK speed/Resolve boosts, healing converts to Ultra Shield)
Team value Reliable survivability via Ultra Shield, strong boss focus, Anemo ATK partner buff when deployed as a Combat Partner
Basic stats (Lv. 1 → Lv. 80) ATK 20 → 376.57 · HP 85 → 1066.94 · Shield 195 → 2447.68 · DEF 285

How the kit works: stealth, spikes, and the hunt state

Ability Type Effect Key values
Stealthy Prowl Skill (Buff) Enter Stealth and exit Relentless Hunt. Generates 2 Fang Spikes when exiting Stealth or re‑casting during Stealth. Sanity cost: 10 · Stealth duration: 7s → 18.4s
Predator’s Pounce Ultimate (Buff) Retract all Fang Spikes to enter Relentless Hunt. Each retracted spike drains HP but converts it to Ultra Shield and extends the Hunt duration. HP won’t drop below 1 from this effect. Sanity cost: 60 · Base Hunt: 5s → 5.75s · +2.0s → +2.3s per spike (up to 50s) · ATK SPD +18% → +45% · Resolve +9% → +18%
Fang for Fang Passive When taking damage, generate a Fang Spike (1/s). Fang Spikes fly to the target, deal Anemo damage along the path, apply Throatcutter (take increased damage from Outsider), then fall and persist on the ground. Up to 10 spikes can exist. Spike DMG 675% → 2016% · Throatcutter +18% → +54% damage taken (15s → 17.25s)
  • Stealth does not break on damage but ends on launching an attack or using the Ultimate.
  • Relentless Hunt grants hitstun immunity and converts all healing into Ultra Shield; direct healing is disabled during the state.
Coercitio • youtube.com
Video thumbnail for 'Complete OUTSIDER Guide! Build, Skills & Full Breakdown – Duet Night Abyss'

Outsider Build Guide

Starts at: 00:00

Strengths and weaknesses

  • Strengths: High survivability through Ultra Shield; consistent DPS windows with hitstun immunity; attack speed and Resolve boosts scale weapon damage; excels at bossing while continuing to use both equipped weapons in Relentless Hunt.
  • Weaknesses: Needs the right weapons and Demon Wedges; damage ceiling depends on stacking and cashing in Fang Spikes cleanly; timing‑sensitive, with room for error if spikes are wasted.

Outsider performs best when you lean into weapon ATK speed, Anemo/Skill Damage, and Resolve. The goal is to generate Fang Spikes quickly, extend Relentless Hunt, and keep pressure during uptime.

Slot Recommendation Why it works
Melee weapon Exiled Fangs High attack speed synergizes with Hunt and on‑hit effects; conditional HP restore helps offset HP drain from retracted spikes.
Ranged weapon Sacrosanct Chorus CRIT and multishot scaling benefit from Outsider’s attack speed boost during Hunt.
Character Demon Wedges Wings • Inspo · Prime • Resolve · Squall • Midnight Sun · Whispering Zephyr · Blaze • Volition (x2) · Blaze • Resolve · Onslaught · Core: Vigilant Stacks ATK, Skill DMG, Anemo ATK, Resolve, and Skill Duration; Vigilant increases tolerance and reduces incoming damage; Whispering Zephyr provides a large timed Skill DMG spike after skill use.

Stat focus by slot:

  • Character: ATK, Anemo ATK, Skill DMG, Skill Duration, Resolve.
  • Melee: ATK speed, CRIT chance/damage, Slash ATK, on‑hit proc rate.
  • Ranged: CRIT/Multishot or Skill DMG, depending on weapon choice.
Tip: When content leans on shielded enemies, slash‑leaning melee setups and wedges that boost Slash ATK can noticeably speed up shield break before you cash in your Hunt window.

Skill priority (upgrades)

  • Predator’s Pounce (Ultimate): Top priority. Extends Relentless Hunt per spike and increases the attack speed/Resolve buffs.
  • Fang for Fang (Passive): Upgrade alongside the Ultimate to raise Fang Spike damage and consistency.
  • Stealthy Prowl (Skill): Improves duration; upgrade after Ultimate/Passive.

Intron levels (constellation-style upgrades)

Intron Effect Practical value
I1 Exiting Stealth grants +60% weapon CRIT chance for 24s. Nice-to-have for opener consistency.
I2 When Fang for Fang or Ravenous Gnaw generates a Fang Spike, 50% chance to generate one additional spike. High impact. Faster spike cap and stronger Hunt extensions.
I3 Stealthy Prowl +2 levels; Fang Spike +1 level. Direct spike scaling; solid if you’re investing.
I4 +35% movement speed while in Stealth. Quality-of-life for repositioning; low damage impact.
I5 Predator’s Pounce +2 levels; Fang Spike +1 level. Strong for both uptime and spike damage.
I6 While in Relentless Hunt, deal +20% additional Anemo damage. Good for Hunt-focused play; lower priority if you run a pure skill‑damage setup.
Braxophone • youtube.com
Video thumbnail for 'SECRETLY OP! Outsider Early Showcase + How to Get Outsider Introns - Duet Night Abyss'

How to Get Outsider Introns

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Teams and Geniemon

Team slot Pick Reason
Active DPS Outsider Stealth setup and Relentless Hunt for safe, sustained boss damage.
Support Truffle and Filbert Resolve buff pairs with Outsider’s Hunt scaling for higher weapon damage.
Flex DPS/Support Margie Teamwide ATK boost to push Outsider’s weapon damage further.
Geniemon Anemelf (best) · Shroomie · Dandemeow Anemo-aligned picks for damage and consistency; alternatives fill broadly similar roles.

How to get Outsider

Path What to do Notes
Story unlock Clear the Main Quest “Prey VS Hunter.” A free copy is granted after completion.
Secret Letter Spend 10 Secret Letter Clues to obtain Outsider’s Secret Letter; complete a Covert Commission to open it. Has a chance to drop a “Thought.” You need 30 Thought pieces to unlock Outsider.
Shop (premium) Buy Outsider Thought pieces with Phoxene Plumule. Premium currency option if you prefer a direct route.

Practical play tips

  • Open with Stealthy Prowl to reposition safely, seed two Fang Spikes, and line up priority targets.
  • Use melee attacks to generate additional Fang Spikes (1 per second), then hit Predator’s Pounce to convert spikes into Ultra Shield and a longer Relentless Hunt.
  • During Hunt, lean into weapon strings; the attack speed and Resolve boosts are Outsider’s main damage engine.
  • When deployed as a Combat Partner, his Anemo ATK buff supports Anemo teammates even when he’s off the field.

Outsider rewards clean setup and disciplined cash‑ins. If you like self‑sufficient DPS who can ignore hitstun, trade HP for power, and stay on target during heavy boss patterns, his kit delivers—provided you invest in attack speed, spike uptime, and the right wedges to make each Hunt window count.

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Pallav Pathak