Duet Night Abyss rewards teams that align with an element and a clear role split. The pattern that consistently works is simple: one on-field damage dealer supported by two units that heal, shield, buff, or control. From there, rotate elements to match enemy weaknesses — the game’s damage modifiers are aggressive enough that this alone can decide a run.

Elemental advantage (v1.0) and why mono-element teams matter

Element Beats Is beaten by Damage when advantaged Damage when not advantaged Bonus effects (notable)
Hydro Pyro Electro +400% -50% (all non-advantaged) Periodic elemental damage
Pyro Anemo Hydro +400% -50% Periodic elemental damage
Anemo Electro Pyro +400% -50% Periodic elemental damage
Electro Hydro Anemo +400% -50% Periodic elemental damage
Lumino Umbro Umbro +400% vs. Umbro -50% vs. others Refreshes all Bonus Effect durations
Umbro Lumino Lumino +400% vs. Lumino -50% vs. others Reduces enemy stance recovery speed

Two practical takeaways fall out of this system. First, always carry multiple elements; hitting the wrong matchup cuts your damage in half. Second, Lumino and Umbro delete each other but underperform against everything else, so build them deliberately for the fights that justify them.

Core roles and team structure

  • Main DPS: on-field unit that carries most of the damage (Weapon DMG or Skill DMG kits both work).
  • Support 1: teamwide buffs, shields, or control; swap in to cast, then rotate out.
  • Support 2 (often healer): uptime on heals and global buffs; fill missing single-target or AoE.

This 1-DPS/2-support template is consistent across elements. If your carry is extremely self-sufficient, keep both slots as supports. If the carry lacks either single-target or AoE, dedicate one slot to a sub-DPS that covers that gap.

Note: Skill Damage cannot critically strike. CRIT-based buffs still benefit Weapon DMG carries and mixed kits, but expect less value for pure Skill DMG teams.
Element Main DPS Support Healer/Support Why it works Swap options
Hydro Rebecca Tabethe Truffle and Filbert Rebecca’s DoT spreads through kills; Tabethe immobilizes and gives teamwide Skill DMG (+8%); Truffle and Filbert sustain and damage buffs. None needed early; later, flex a control slot if you overkill AoE.
Electro Rhythm or Sibylle Randy Truffle and Filbert Main Electro carry with strong AoE/skill uptime; Randy adds shields and DEF +15%; Truffle and Filbert stabilizes fights. Pair Rhythm with Tabethe for extra grouping; keep Truffle and Filbert for safety.
Anemo Psyche or Outsider Daphne Truffle and Filbert Resolve-centric DPS that thrive low HP behind shields; Daphne’s universal CRIT +40% is potent for Weapon DMG carries; Truffle and Filbert grants Resolve +15% and healing. If leaning pure Skill DMG, expect reduced value from CRIT buffs.
Pyro Lynn / Yale & Olivert / Margie Hellfire Truffle and Filbert or Daphne Hellfire taunts, self-heals, and grants Pyro ATK +40%; pair with your best Pyro carry; third slot for sustain (Truffle and Filbert) or CRIT (Daphne). Use Daphne if your DPS is Weapon DMG focused; otherwise keep Truffle and Filbert.
Umbro Berenica + Phantasio (dual DPS) Daphne — Both Umbro carries buff each other’s ATK (+40% and +50%); Daphne adds healing and teamwide CRIT for mixed kits. Alternatively run a single-DPS Umbro with a generalist buffer if survivability dips.
Lumino Lisbell or Lady Nifle Protagonist Truffle and Filbert or Daphne Lisbell excels at single-target; Lady Nifle leans AoE. Protagonist supplies shields, Weapon DMG, CRIT, and trigger probability. Third slot covers heals or CRIT. Truffle and Filbert for safer clears; Daphne when you want more damage.

These templates are flexible. If a stage leans hard into hordes, favor AoE-skewed subs (Rhythm, Lady Nifle). For bosses, slot single-target specialists (Lisbell, Phantasio) and Weapon DMG buffers (Protagonist).

Early-, mid-, and late-game pivots

  • Early: Rebecca is a reliable starter carry, with Phoxhunter available immediately and Berenica arriving soon after. Add Daphne early in Chapter 2 for healing and control. Tabethe pairs naturally with Rebecca for Hydro synergy and team Skill DMG.
  • Mid: Keep the 1-DPS/2-support shell and start farming Thoughts for your universal supports (Daphne, Truffle and Filbert). Build at least two elements to avoid the 50% penalty.
  • Late: Phantasio rises as a top boss killer, often paired with Berenica as sub-DPS and Tabethe for control and Skill DMG. Daphne remains a strong universal option if your Umbro slot needs more sustain than lock-down.

Two-squad planning for Immersive Theatre

Endgame content expects more than one functional trio. Prepare two complete teams in different elements to consistently hit advantageous matchups and avoid the global -50% damage when off-element. Build around what you already have leveled — for many accounts, a Hydro trio anchored by Rebecca and a second team in Electro, Anemo, or Lumino is a clean starting point.

Tip: You’re locked into the on-field character you enter the mission as. Choose supports that directly amplify that carry’s kit, then rotate them in to cast and rotate out.
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Nuances that change team value

  • CRIT vs. Skill DMG: Daphne’s CRIT +40% is exceptional for Weapon DMG carries (basic attack chains and transformations). Pure Skill DMG kits gain less.
  • Resolve users: Psyche and Outsider perform best with Resolve boosts and reliable shields; Truffle and Filbert adds Resolve +15% on top of healing.
  • Role compression: Hellfire doubles as tank and buffer (Pyro ATK +40%), freeing your third slot for either healing (Truffle and Filbert) or damage (Daphne).
  • Team lockdown: Tabethe’s tentacles immobilize and add Hydro Damage to allies, making her a standout support even outside Hydro-led teams when you need reliable control.
  • Umbro synergy: Running both Berenica and Phantasio stacks mutual ATK buffs, but consider encounter type — Umbro underperforms outside its opposite, so deploy against Lumino targets to fully capitalize.

Quick reference: best-in-slot trios to build first

Use case Team Notes
General farming (AoE) Rebecca + Tabethe + Truffle and Filbert Wide coverage through DoT spread and immobilize; very safe.
Bossing (single-target) Lisbell + Protagonist + Truffle and Filbert Consistent Weapon DMG buffs and shields; stable sustain.
Pyro progression Lynn + Hellfire + Truffle and Filbert Hellfire’s Pyro ATK +40% and taunt smooth out tougher stages.
Anemo carry Psyche + Protagonist or Daphne + Truffle and Filbert Pick Protagonist for Weapon DMG focus, Daphne for CRIT; keep Truffle and Filbert for Resolve and heals.
Electro control Sibylle + Rhythm + Truffle and Filbert Strong AoE with reliable sustain; Rhythm adds grouping and utility.
Umbro burst Phantasio + Berenica + Daphne Dual-DPS shell with universal CRIT and healing; deploy into Lumino.

The bottom line: pick a carry you enjoy, wrap it with two supports, and always bring the right element. As you expand your roster, maintain at least two full trios in different elements so endgame rotations don’t force you into the 50% damage tax. From there, it’s small optimizations — CRIT where it counts, Resolve where it’s safe, and control when the field gets crowded.