Duet Night Abyss features The Warden of Inferno as a significant challenge in the game's story progression during chapter 2. Defeating this boss is essential to advance the main quest and to unlock more difficult weekly Nocturnal Echo encounters that yield crafting and upgrade materials.
Currently, story bosses including The Warden of Inferno can't be rebattled in Sandrealm Meditation but can be challenged in their Nocturnal Echo form weekly up to five times. These enhanced bosses drop materials useful for upgrading gear and crafting.
Where to find The Warden of Inferno in Duet Night Abyss
The Warden of Inferno appears in Chapter 2 during the "The Judgement Day" mission, typically reachable after progressing through earlier story bosses like Battle Maven. Its level is around 50, demanding readiness for advanced combat tactics.

Understanding armor stance bars and weakness exposed
The boss employs an armor stance system where it takes damage to its armor first. The white bar below the Boss health bar (red) is the armor stance bar.

Sustained attacks that break the boss's armor stance bars trigger a "Weakness Exposed" state. This opens a small window where you can land high-damage hits critical to defeating it efficiently. Managing stamina and timing attacks during this vulnerability is crucial.

Step-by-step guide to defeating The Warden of Inferno
Step 1: Study attack cues
Observe the boss’s movements to recognize charged attacks and avoid damage zones.
Step 2: Focus on breaking armor stance bars
Aim damage primarily at armor first to trigger Weakness Exposed state.
Step 3: Dodge effectively during telegraphed attacks
Use sidesteps, rolls or jumps timed to attack indicators to survive.
Step 4: Capitalize on Weakness Exposed
Launch high damage attacks during this window to maximize damage.

Step 5: Repeat until victory
Continue the cycle of dodging, armor breaking, and attacking until the Warden is defeated.
The Warden Of Inferno Boss Drops
| Drop Item |
|---|
| Secret Letter: Embla Inflorescence |
| Secret Letter: Arclight Apocalypses |
| Secret Letter: Day of Sacred Verdict |
| Secret Letter: Punitive Inferno |
| Secret Letter: Hellfire |
| Ring of Justice Rekindled |
Tips for defeating The Warden of Inferno
The Warden of Inferno has several powerful, often charged attacks with telegraphed indicators showing where damage zones will appear. Key strategies include:
- Watching for charged attack cues to dodge or reposition.
- Staying mobile to avoid area-of-effect damage zones.
- Using quick attacks or ranged skills to chip away at armor while avoiding heavy retaliations.
- Timing aggressive moves after the armor break for maximum damage.
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