Duet Night Abyss assigns every character two weapons — one ranged and one melee — across 12 weapon classes. Below is a launch‑window tier list that focuses on max damage values, attack type, and class performance. Where opinions diverge, the placement favors broad agreement across early rankings and the weapons’ raw numbers.

How to read this tier list (classes, stats, roles)

Each entry lists its class, whether it’s melee or ranged, “Attack Type” (Slash/Spike/Smash), and the weapon’s published maximum damage. The list groups weapons by overall power and reliability in typical content, with S‑tier being the most generally effective. Real performance still depends on your character kit and encounter type, but these picks are strong, versatile defaults.

S‑tier weapons (best at launch)

Weapon Class Type Attack Max DMG
Elpides Abound Polearm Melee Slash 276.15
Siren’s Kiss Polearm Melee Spike 263.6
Excresduo Dual Pistols Ranged Spike 263.6
Undying Oneiros Whipsword Melee Spike 263.6
Exiled Fangs Dual Blades Melee Slash 263.6
Fathomless Sharkgaze Dual Blades Melee Spike 251.04

These are the headline picks for damage and consistency. Polearms and dual blades dominate melee, while Excresduo is the standout ranged option early on.

A‑tier weapons (strong and reliable)

Weapon Class Type Attack Max DMG
Flamme De Epuration Assault Rifle Ranged Slash 238.49
Daybreak Hymn Assault Rifle Ranged Spike 225.94
Arclight Apocalypses Bow Ranged Smash 225.94
Soulrend Bow Ranged Smash 238.49
Sacrosanct Decree Pistol Ranged Spike 225.94
Bluecurrent Pulse Dual Pistols Ranged Spike 238.49
Punitive Inferno Greatsword Melee Smash 238.49
Ironforger Greatsword Melee Slash 225.94
Silverwhite Edict Grenade Launcher Ranged Spike 238.49
Destructo Grenade Launcher Ranged Smash 225.94
Momiji Itteki Katana Melee Slash 239.49
Sacred Favour Katana Melee Spike 251.04
Wanewraith Polearm Melee Slash 238.49
Wandering Rose Sword Melee Spike 251.04
Shackle of Lonewolf Sword Melee Spike 251.04
Blade Amberglow Sword Melee Smash 238.49
Ingenious Tactics Sword Melee Slash 225.94
Tetherlash Whipsword Melee Smash 238.49

Excellent damage profiles and flexible classes make these easy to recommend. Several of these hover near S‑tier and will feel top‑tier in the right hands or team setups.

B‑tier weapons (good, but more situational)

Weapon Class Type Attack Max DMG
Submerged Serenade Assault Rifle Ranged Slash 200.84
Osteobreaker Assault Rifle Ranged Spike 213.39
Searing Sandwhisper Bow Ranged Spike 213.39
Guixu Ratchet Grenade Launcher Ranged Slash 200.84
Day of Sacred Verdict Shotgun Ranged Slash 213.99
Silent Sower Shotgun Ranged Smash 200.84
Pyrothirst Greatsword Melee Smash 213.39
Withershade Katana Melee Smash 213.39
Entropic Singularity Pistol Ranged Slash 200.84
Remanent Reminiscence Sword Melee Spike 213.39
Viridis Reefs Whipsword Melee Spike 213.39

These are viable and can clear most content comfortably, but the ceiling is lower or the kits are more niche than the tiers above.

C‑tier weapons (serviceable early, outclassed later)

Weapon Class Type Attack Max DMG
Stellar Finality Grenade Launcher Ranged Smash 175.73
Blast Artistry Shotgun Ranged Smash 188.28
Rendhusk Pistol Ranged Smash 188.28
Exiled Thunderwyrm Assault Rifle Ranged Spike 188.28
Dreamweaver’s Feather Assault Rifle Ranged Slash 188.28
Embla Inflorescence Bow Ranged Slash 188.28

Use these while you build out your armory, then swap up when you can craft or claim higher‑tier options.

Bottom tier status

There’s no clear, universal “do not use” tier at launch. Balance is close enough that even lower placements can work in casual play, especially if you prefer their feel or attack type.

How to get weapons

  • Secret Letters: Spend 10 Secret Letter Clues to obtain a weapon’s Secret Letter, clear a Covert Commission stage, then open it for a chance at that weapon’s blueprint. Craft the weapon in the Forge once you have its blueprint.
  • Shop purchase: Weapons can be bought for 3,280 Phoxene Plumules via the in‑game Shop.
  • Trial Rank rewards: Certain rank milestones award specific weapons (for example, the Ironforger greatsword).
Tip: If you’re missing blueprints for an S/A‑tier pick, crafting the closest A‑tier alternative in the same class is usually the best stopgap.

How to upgrade and equip weapons

  • Leveling: Raise a weapon’s EXP with upgrade materials to increase its Weapon Level and base stats.
  • Smelting: Feed a duplicate of the same weapon to increase its Smelting level and upgrade a weapon skill.
  • Equip: Open the Armory, select a weapon, then tap Equip. Assign one ranged and one melee weapon per character.

If you’re just starting, prioritize one S‑tier pick in each role: a high‑damage melee (Elpides Abound or Siren’s Kiss) and a reliable ranged option (Excresduo). Most A‑tier choices will carry late‑game content while you chase or craft the headliners, and none of the lower‑tier options are dead ends — they’re simply outpaced once you unlock and level the standouts.