Inferno Penitentiary
Hellfire
/
Pyro
Ranged: Grenade Launcher; Melee: Greatsword
Introduction
Hellfire is a Pyro character in Duet Night Abyss. Hellfire's weapon type is Ranged: Grenade Launcher; Melee: Greatsword and role is DPS / Skill DMG / Max HP.
On our Duet Night Abyss tier list Hellfire is C tier, 21st of the 26 characters ranked, from where 17 current tier lists put Hellfire.
Other Pyro characters in Duet Night Abyss: Camilla, Lynn, Margie and Yale and Oliver.
Is Hellfire good?
Hellfire tanks for the team while dealing AoE damage that scales off her own HP, taunting enemies onto herself to keep the rest of the party safe. Before her Intron 7 she leans more toward the tank side of that equation, but I7 lets her proc her Puncture Retribution passive just from attacking instead of needing to get hit, and even self-damages a sliver of her own HP at full health to keep that state going.
That upgrade is what turns her into an actual damage dealer instead of just a durable body up front.
Strengths
- Damage scales off her own HP
- Taunts enemies to protect the rest of the team
- AoE-focused kit
- Intron 7 turns her passive into a reliable damage engine
Weaknesses
- Doesn't become a real DPS threat until Intron 7
Best build for Hellfire
From 2 guidesMelee weapon
3 options- 12 of 2
- 21 of 2
- 31 of 2
Sovereign Ember
Skill priority
- 1Raging InfernoBuff
- 2Cage of DespairDMGRetributive Resolve
Profile
Hellfire's full name is Hellfire Surt. Hellfire carries the title "Inferno Penitentiary". Hellfire's birthday is August 17th/18th. Hellfire is voiced by Yun Hezhui (云鹤追) in Chinese, Gabrielle Nellis-Pain in English, Koshimizu Ami (小清水亜美) in Japanese, and Kim Eun-yeon (김보나) in Korean. Hellfire was released on 28 October 2025.
Stats
- ATK188.28
- HP3,445.58
- Shield0
- DEF345
- Max Sanity120
- Skill DMG100%
- Skill Range100%
- Morale0%
- Malaise0%
At max level. Each bar is measured against the highest value in the Duet Night Abyss roster.
Skills
10Raging Inferno
BuffEnters [Retribution] state. Retribution: Deals Pyro Damage to nearby enemies once every 2s. If Hellfire takes damage during Retribution, extends the state duration and deals [Puncture Retribution] Pyro Damage to nearby enemies once every 2s.
Cage of Despair
DMGDeals Pyro Damage to surrounding enemies and Taunts them.
Retributive Resolve
Increases Max HP and continuously restores HP.
Guilty Verdict
Increases damage dealt to enemies Taunted by Hellfire.
Aetherflame
Increases ATK for self and Pyro allies.
Intron 1
IntronIncreases damage dealt to enemies within a 6-metre radius around Hellfire by 30.0%.
Intron 2
IntronIncreases the HP recovery granted by Retributive Resolve to 0.4%.
Intron 4
IntronDecreases the interval of dealing Puncture Retribution Pyro Damage to 1.4s.
Intron 6
IntronFor every 5 Sanity-consuming skills uses by nearby allies, Hellfire automatically unleashes Cage of Despair. Can trigger once every 5s.
Intron 7
IntronWhile Retribution is active, dealing Skill DMG or Melee Weapon DMG to an enemy has a 60.0% chance to trigger an additional Puncture Retribution centred on the target and grant 1 stack of Reckoning, up to 150 stacks. If the user's HP is at 100%, it also deals damage equal to 0.1% of Max HP to self. This effect can trigger up to 8 times within 2s. Each stack of Reckoning increases Morale by 1.0%. DMG dealt by Cage of Despair is multiplied by an additional 2.0% per stack.
How to get Hellfire
Purchase Thoughts for 150 Phoxene Plumule in the Shop, or exchange 10 Secret Letter Clues for a Secret Letter (10 Golden/2 Silver reward track); 30 Thoughts needed; Essence Thoughts (Memento Shop) upgrade Intron 6 to 7.
Art
