Duet Night Abyss does not use character or combat-weapon gacha. You unlock playable characters through story rewards and Secret Letters, while weapons come from Secret Letters, blueprints, components, and forging. The game does still have randomized cosmetic pulls through Myriad, so “no gacha at all” is not accurate.
As of global version 1.5.0, Paradise Prelude, launched on July 28, 2026, the core progression loop is gameplay-based: play content, earn Secret Letter Clues, target a reward pool, and farm the materials needed to build what you obtain.
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The short answer: no gameplay gacha, but cosmetic gacha remains
Before launch, Duet Night Abyss removed its character banners, weapon banners, stamina system, and Sanergy system. Combat characters and weapons are not obtained by spending premium currency on randomized banners.
Instead, the game uses a targeted acquisition system built around Secret Letters and Covert Commissions. You can still encounter randomness while farming rewards, but the randomness is inside the gameplay loop rather than a paid character or weapon banner.
The distinction matters:
- Characters: obtained through story progression or Secret Letter rewards.
- Combat weapons: obtained through story rewards, Secret Letters, blueprints, components, shops, crafting, and events.
- Demon Wedges: obtained through commissions, shops, crafting, and rotating activities.
- Cosmetics: available through the randomized Myriad system.
That makes “no gameplay gacha” or “cosmetics-only gacha” a more accurate description than “Duet Night Abyss has no gacha.”
Sources: PC Gamer and Game8’s progression overview.
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How Myriad works
Myriad is Duet Night Abyss’s cosmetic pull system. Open it from the main menu to view event-exclusive and permanent cosmetic banners.
Myriad can award character skins, weapon appearance skins, accessories, and other visual items. These rewards do not unlock a combat character or combat weapon.
The documented rules include:
- A Purple-tier-or-higher item is guaranteed within 10 pulls.
- A Golden-tier item is guaranteed within 90 pulls.
- Event-exclusive and standard-banner pity counters are separate.
- Pity does not carry between different banners.
- A Golden result may be the featured skin or an Iridescent Prism.
- Iridescent Prisms can be exchanged for featured cosmetics.
Check the banner-details screen before pulling because it displays the relevant counters and exchange information. More details are available in Game8’s Myriad guide.
The main progression loop: Secret Letter Clues to rewards
The central acquisition chain is:
Secret Letter Clues → Secret Letters → Covert Commission rewards → Thoughts, blueprints, or weapon parts
You earn Secret Letter Clues through ordinary play, including quests, missions, events, achievements, and other activities. The standard exchange rate is 10 Secret Letter Clues for one Secret Letter.
Use these menus to access the system:
- Shop → Secret Letters: purchase a Letter and choose a category such as Characters, Weapons, or Demon Wedges.
- Combat → Covert Commissions: select the relevant Letter and run the commission.
A Secret Letter does not directly grant the named character or weapon. It changes the reward pool for the Covert Commission you are about to complete.
That difference explains why a Letter can feel similar to a banner ticket at first glance, while functioning very differently in practice: it targets gameplay rewards, and you still have to complete the associated activity and select useful results.
How to unlock characters
Story and quest rewards
Not every character must be farmed through Secret Letters. Some join the roster directly through story or quest progression. Documented examples include Outsider, awarded through the Prey VS Hunter quest, while Daphne, Margie, and other early characters can join through the story.
Story progression can also provide weapons, so check quest rewards before spending Clues on an item you may receive naturally.
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For characters obtained through the Letter system:
- Open Shop → Secret Letters.
- Buy the desired character’s Secret Letter with Secret Letter Clues.
- Open Combat → Covert Commissions.
- Select the matching character Letter.
- Clear the commission.
- Choose from the offered reward results.
- Collect that character’s Thoughts.
- Accumulate 30 Thoughts to unlock the character.
After recruitment, additional Thoughts are still useful. They are spent on the character’s Introns, so continuing to farm a character’s Letter is not automatically pointless once the character joins your roster.
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See Game8’s Secret Letter guide and All Things How’s progression explanation.
Covert Commissions are repeatable farming content
Covert Commissions unlock after the side quest Go, Geniemons!. They appear in the Combat menu and do not consume stamina.
The commission categories are:
- Character
- Weapon
- Demon Wedge
Objective layouts rotate, including hourly objective changes, while the selected Secret Letter determines the relevant reward pool. This makes Commissions repeatable farming activities rather than conventional banner pulls.
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Completing a commission does not automatically grant the character or weapon named on the Letter. The run presents a selection of reward results—commonly three choices—and you choose what to claim.
Depending on the commission, those choices can include character Thoughts, weapon blueprints, or weapon components. Valuable Gold-tier results are not guaranteed on every run, so you can experience dry streaks while chasing the final Thoughts or a missing weapon part.
Some players have reported hard guarantees for certain Gold rewards, but those reports are community-sourced rather than clearly documented in publicly accessible official patch notes. Treat them as useful player information, not a universal official rule.
Character progression after unlocking a character
Obtaining a character is only one part of progression. Characters advance through several separate systems:
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- Character level
- Ascension
- Skills
- Introns
- Demon Wedges
- Weapon levels and weapon-specific upgrades
Characters gain experience through combat and commissions, but Character EXP Materials are the primary leveling method. When a character reaches the current level cap, Ascension raises the level and skill ceilings, increases base stats, and increases Demon Wedge tolerance.
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The documented maximum is six Ascensions and character level 80 at Trial Rank 60. Ascension availability is tied to Trial Rank, so unlocking a character does not mean you can immediately raise that character to the account’s eventual maximum.
Introns
Introns are permanent, character-specific upgrades. They can improve stats, skills, or other effects and require additional Thoughts for that character. The initial 30 Thoughts unlock the character; later Thoughts are used for Intron nodes.
How weapons are obtained and forged
Weapons do not use the character Thoughts system. Most farmable weapons require a blueprint, weapon components, crafting materials, and Coins before they can be forged.
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The practical process is:
- Buy or obtain the appropriate weapon Secret Letter.
- Use it in a Weapon Covert Commission.
- Select blueprint or component rewards when they appear.
- Open the Forge through the Sanctuary blacksmith or the relevant Forge interface.
- Supply the blueprint, components, materials, and Coins.
- Forge the weapon.
- Level and Ascend it through Armoury.
A blueprint alone is not the finished weapon. If the Forge will not let you craft an item, check for missing components or intermediate materials before assuming the weapon is bugged or unavailable.
To upgrade a weapon, the documented menu path is Armoury → select a character → select the weapon type → Upgrade. Choose the required materials and levels, then confirm the upgrade. Weapons can be equipped by different characters, so a weapon is not necessarily an exclusive signature item. Character proficiency and Demon Wedge choices still determine whether it fits a particular build.
See Game8’s weapon upgrade guide and the weapon reference.
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Demon Wedges are the build-customization layer
Demon Wedges modify both characters and weapons. They are separate from the character and weapon acquisition systems, but they are important for optimizing a build.
Equip them through:
Armoury → select a character or weapon → Demon Wedge button → search for or drag a compatible Wedge into an empty slot
Keep these restrictions in mind:
- Character and weapon Demon Wedges are separate.
- A Wedge must be compatible with the selected character or weapon.
- Each Wedge has a Tolerance value.
- Characters and weapons have Tolerance Limits.
- Your loadout cannot exceed the applicable Tolerance Limit.
- Matching a Wedge’s Track to the slot reduces its tolerance load.
- Mismatching the Track increases the load.
- Leveling and Ascension raise tolerance and can unlock additional slots.
Gold Demon Wedges require blueprints and can be forged. Once a Gold Wedge reaches its normal level cap, it can be amplified with duplicates or Amplification Stimulators. Amplification improves its stats but also increases its Tolerance value, so the strongest possible Wedge loadout is not always the most practical one.
Details and menu guidance are listed in Game8’s Demon Wedge guide.
Trial Rank is the main account gate
Trial Rank controls access to higher character and weapon Ascensions, additional Secret Letters, and other systems. It is therefore a more important early-game priority than simply saving Clues for a favorite character.
Documented Secret Letter shop gates include Trial Ranks such as 15, 20, 29, 34, 35, 36, 38, 45, 50, and 60, depending on the specific item.
This creates an important situation: you may have enough Secret Letter Clues to target a character or weapon but still be unable to purchase its Letter because your Trial Rank is too low.
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A sensible early progression order is:
- Advance the main story and feature-unlocking quests.
- Raise Trial Rank.
- Unlock Covert Commissions and the relevant shop categories.
- Farm Secret Letter Clues.
- Spend Letters on the character, weapon, or Wedge you want.
- Invest leveling and Ascension materials selectively rather than spreading them across the entire roster.
Rotating rewards and update availability
Some high-value Secret Letters are temporarily featured in Immersive Theatre or Nocturnal Echoes before rotating elsewhere. A reward leaving a featured table does not necessarily make it permanently missable or paid-only. It may later enter the Secret Letter Shop or another acquisition route.
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However, timing still matters. Newly released characters and weapons may first appear through an event or featured activity and only become available through a permanent free route after a later update phase. “Free to unlock” does not always mean “available in the permanent shop on patch day.”
Check the current in-game reward preview before spending Letters or entering a weekly mode. Rotation schedules and reset times can change. One early guide documents a weekly dungeon reset at Monday 05:00 UTC+8, but the activity interface is the safer source for the current schedule.
What changed in version 1.5.0?
Global version 1.5.0, Paradise Prelude, launched on July 28, 2026. Relevant progression additions and changes include:
- New Hydro character Ada.
- New weapons including The Best Day, Sanguis Sanctus – Pistol, Obsidian Heart-Reaper, and the Calamity Weapon Sovereign Ember.
- New Demon Wedges and blueprints.
- Additional Secret Letter Shop entries.
- Adjusted acquisition routes for several Demon Wedges.
- Abyss-related dismantling and exchange improvements.
- A planned 42-day major-version cadence beginning with Paradise Prelude.
The update documentation says new characters and weapons are obtainable for free through Secret Letters or the Shop after the relevant update phases. Always verify the current in-game route for newly released content.
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Source: version 1.5.0 update information.
Common misconceptions
“There are no pulls in Duet Night Abyss.”
Incorrect. Myriad is a cosmetic pull system with rarity tiers, pity, limited banners, and duplicate conversion. What the game removed was gameplay-character and combat-weapon gacha.
“Every character is immediately available from the shop.”
Incorrect. Some characters are story rewards, some are gated by Trial Rank, some are introduced through rotating activities, and newly released characters may reach permanent free acquisition only after their update phases.
“One Secret Letter guarantees the character.”
Incorrect. A Letter targets a Covert Commission reward pool. You must complete the commission, select rewards, and accumulate 30 Thoughts for the character unlock.
“More Letters are pointless after unlocking a character.”
Incorrect. Additional Thoughts can be spent on Introns and further character upgrades.
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Incorrect. The blueprint is one crafting requirement. You also need the relevant components, materials, and Coins before forging the weapon.
“There is no RNG anywhere in progression.”
Incorrect. Character and weapon ownership are not banner-gated, but commission reward selection is random enough to create dry streaks.
“Rerolling is necessary.”
That advice is outdated for the current system. There are no character or weapon banners to reroll for, and rerolling cannot produce a stronger random starting roster or signature weapon in the conventional gacha sense.
“The game has no time gates.”
That is too broad. There is no stamina or Sanergy bar limiting ordinary farming, but Trial Rank, story progression, weekly activities, event phases, rotating rewards, and reset schedules still affect when content becomes available.
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