This article is a comprehensive guide to Punitive Inferno in Duet Night Abyss (DNA), covering their rating, recommended characters, stats and skills,how to get, and more.
All Weapon ListTable of Contents
Punitive Inferno Tier and Stats / Skill

| Category | Weapon Type | DMG Type |
|---|---|---|
| Melee | Greatsword | Smash |
Weapon Stats
| ATK | 19 | Explosion Range | - |
|---|---|---|---|
| ATK(Lv.Max) | 238.49 | ATK Range | - |
| Crit Chance | 24% | Multishot | - |
| Crit DMG | 205% | Mag Cap. | - |
| ATK Speed | 1 | Max Ammo | - |
| Trigger Prob | 15% | Ammo Conv. Rate | - |
Weapon Skill
| Default | Max HP +50.0%. When a Pyro character takes damage, grants +15.0% Skill Duration for 8.0s (up to 3.0 stacks). |
|---|---|
| Max | Max HP +100.0%. When a Pyro character takes damage, grants +30.0% Skill Duration for 8.0s (up to 3.0 stacks). |
How to Get Punitive Inferno
Drops From Nocturnal Echoes

Punitive Inferno's Secret Letter can be obtained from Nocturnal Echoes via The Warden of the Inferno fight. This Nocturnal Echoes fight is unlocked after clearing The Judgement Day quest.
Use Secret Letters in Covert Commissions

Secret Letters can be used during Covert Commissions to get a chance for the weapon's blueprint and materials to drop. Since Punitive Inferno is a Greatsword, it will only need 2 weapon-specific components. Blueprints are consumed when forging a weapon. You will need a total of 6 blueprints and the corresponding materials to fully max a weapon.
Recomended Characters
| Character | Explanation |
|---|---|
Sibylle | - Sibylle's Summon's damage scales off her Max HP. By increasing her HP through this weapon, her damage will also be increased |
Truffle and Filbert | - With a skillset that scales according to Max HP, Truffle and Filbert can benefit from the HP bonus granted by Punitive Inferno. Note that she will be unable to benefit from the secondary effects, and you will want to equip Undying Oneiros on her over this weapon. |