Hellfire build for Duet Night Abyss — weapons, Demon Wedges, teams

How to kit the Pyro tank-DPS around HP scaling, taunt uptime, and sustain.

By Pallav Pathak 4 min read
Hellfire build for Duet Night Abyss — weapons, Demon Wedges, teams

Hellfire is a Pyro, HP-scaling damage dealer that doubles as a frontline anchor. Her skill damage ticks off Max HP, she draws aggro on demand, and she heals herself passively—so your build should push Max HP, keep her area damage active longer, and expand its reach. Below is a compact, practical setup covering weapons, Demon Wedges, team partners, and the basic gameplan.


Hellfire role, weapon types, and HP-scaling kit

Category Details
Element Pyro
Role DPS / Skill DMG / Max HP (tank-DPS hybrid)
Weapons Melee: Greatsword · Ranged: Grenade Launcher
Active ranking Strong frontline DPS; excels as a partner buffer for Pyro teams

Hellfire’s loop revolves around a long, pulsing Pyro aura and a wide, on-demand taunt. She naturally regenerates HP and can stack substantial Max HP, which turns her periodic damage into a reliable, room-clearing threat while she soaks hits to extend uptime.

Morph • youtube.com
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Skill details and upgrade priority

Ability What it does Key numbers (Lv. 1 → max)
Raging Inferno (Skill) Enters Retribution, dealing periodic Pyro damage in an area. Taking damage extends the state and triggers a stronger Puncture Retribution tick. Duration: 15s → 17.25s; DoT: 24% → 60% Max HP every ~2s; Puncture: 36%+128 → 117%+371 Max HP; DoT radius: 10m; Puncture radius: 6m
Cage of Despair (Ultimate) Big AoE Pyro hit that Taunts nearby enemies for crowd control and aggro control. Damage: 67%+110 → 202%+317 Max HP; Radius: 20m; Taunt: 5s
Retributive Resolve (Passive) Boosts Max HP and continuously regenerates HP per second. Max HP: +39% → +120%; Regen: 0.3% Max HP per second (Intron 2 increases to 0.4%)
  • Upgrade order: Raging Inferno → Cage of Despair → Retributive Resolve.
  • Passive upgrades include large HP and Skill Duration bumps, plus Guilty Verdict (+50% damage to enemies Taunted by Hellfire).
  • Aetherflame (partner passive) increases ATK for her and nearby Pyro teammates when she’s deployed as a Combat Partner, enabling dual-Pyro comps.

Slot Pick Why it works
Melee (Best) Punitive Inferno Massive Max HP scaling and Skill Duration synergy keep Retribution ticking longer while boosting its HP-based damage.
Melee (Alt.) Undying Oneiros Another route to high Max HP with additional HP effects.
Melee (Alt.) Pyrothirst Directly extends skill duration—useful if you’re short on duration from wedges.
Ranged (Best) Destructo Large Skill Range boost helps tag more enemies within Retribution’s damage field.
Ranged (Alt.) Excresduo Amplifies skill damage—good if range is covered by wedges.
Ranged (Alt.) Soulrend Another strong Skill Range option if Destructo isn’t available.

Prioritize Max HP and skill-friendly stats (duration, range, skill damage). If Punitive Inferno is on hand, it’s the most direct path to bigger damage and uptime.


Hellfire scales off Max HP and thrives on persistent area damage. Build wedges to add Pyro damage, range, duration, and sanity economy so she can stay in Retribution longer and control larger spaces.

Slot Wedge Core effect
1 Inferno • Wildfire Pyro ATK +18%, Skill DMG +18%, Skill Range +18%
2 Wings • Inspo Max Sanity +30%, Skill Efficiency +12%
3 Prime • Serenity ATK +75%, HP +75%, DEF +75; restores extra Sanity periodically
4 Trapped Increases damage per enemy within 20m (up to +24%)
5 Nirvana • Spectrum HP +48%, Skill Range +30%; can be equipped in multiples at +5

If you have deeper wedge pools, additional picks that align with this plan include Devouring Wildfire variants for Pyro scaling, Prime/Morale options for teamwide offense, and movement/defense filler as needed. The goal is consistent: keep Sanity stable, push HP high, and make the aura cover more ground for longer.


Best teams and Geniemon

Team shell Units What you get
Dual Pyro core Hellfire (active) · Lynn (Pyro DPS) · Randy (Support) Mutual ATK buffs via Pyro partner synergy; Randy adds DEF and shields to hold aggro safely.
Beginner-friendly Hellfire · Margie (Pyro DPS) · Phoxhunter (Support) Simple damage layering and weapon DMG/attack buffs for early progression.
Geniemon Role
Pyrelf Best-in-slot Pyro ATK buff for Pyro comps
Zippyro Sanity restoration plus Pyro ATK—helps sustain skill uptime
Pyrootail Alternative Pyro support option for early teams

Hellfire performs best when a second Pyro carry converts her partner passive into extra team ATK. Pair with a sturdier support for late-game survivability, especially in content with constant chip damage.


How to play Hellfire effectively

  • Open with Raging Inferno to enter Retribution and start periodic Pyro ticks. The effect extends when Hellfire takes damage, so face the pack rather than kiting endlessly.
  • Drop Cage of Despair to Taunt and keep enemies in range. It’s both damage and crowd control—use it to pin down elites while Retribution ticks.
  • Lean into Retributive Resolve sustain. The passive HP regen plus high Max HP lets you hold aggro safely; wedge and weapon choices should reinforce this.
  • Prioritize Skill Range and Skill Duration. Bigger circles hit more targets; longer uptime reduces downtime between pulls.
  • Manage Sanity. Wedges like Wings • Inspo and Prime • Serenity support frequent skill usage without burning out.
Tip: If fights scatter, swap to the Grenade Launcher to tag distant targets and pull them back into your aura before re-engaging in melee range.

Intron highlights worth chasing

  • Level 1: +30% damage to enemies within 6m—directly improves close-range uptime.
  • Level 2: Increases passive regen to 0.4% Max HP per second.
  • Level 4: Faster Puncture Retribution intervals, improving damage while under pressure.
  • Level 6: Auto-casts Cage of Despair after nearby teammates spend Sanity on skills (with an internal cooldown), adding free taunts during heavy rotations.
Morph • youtube.com
Video thumbnail for 'Hellfire step on me BUILD 2 0 Duet Night Abyss F2P Farming End Game'

How to unlock Hellfire

  • Use the Secret Letter system: spend 10 Secret Letter Clues to purchase Hellfire’s letter, then open it after a Covert Commission stage for a chance at a Thought.
  • You need 30 Thought pieces to unlock Hellfire. Letters are not guaranteed to drop Thoughts.
  • Alternatively, buy individual Thoughts in the in-game Shop using Phoxene Plumule (premium currency).

The build path doesn’t change: stack Max HP, keep Retribution up, widen its reach, and bring a second Pyro to cash in on her partner passive. Hellfire rewards players who stand their ground and let the damage tick—if you give her Sanity sustain and a reliable taunt window, she’ll carry entire rooms on pulse timing alone.