I’ve been playing Duet Night Abyss since launch, and I’ve got to tell you – the character acquisition system in this game is completely different from anything I’ve experienced in other gacha games. When I first started, I was expecting the usual frustrating RNG-based character pulls, but boy was I in for a surprise!
You see, Duet Night Abyss has completely done away with gacha mechanics for characters and weapons. That’s right – no more spending hundreds of dollars hoping to get that one character you want. Every single character in the game can be obtained through gameplay, and I’m going to show you exactly how to do it.
Free Characters Just for Playing the Story
Let me start with the easiest way to get characters in Duet Night Abyss. When I first began my journey, I was shocked to discover that several characters are literally handed to you just for progressing through the main story. These free characters include:
- Berenica
- Daphne
- Lisbell
- Margie
- Outsider
- Truffle & Filbert
- Rebecca
I remember unlocking Margie right after finishing the prologue, and it felt amazing to start with such a solid roster without any grinding. The best part? You don’t have to do anything special to get these characters – just play the game naturally, and they’ll join your team as you progress through the chapters.
Understanding the Secret Letter System
Now, for the characters that aren’t given to you for free, you’ll need to understand the Secret Letter system. This is the core mechanic for character acquisition in Duet Night Abyss, and I’ll admit it took me a little while to wrap my head around it.
Here’s how it works: you need Secret Letters to run special missions called Covert Commissions, which reward you with Character Thoughts. Once you collect 30 Character Thoughts for a specific character, you can unlock them permanently. No RNG, no luck involved – just pure grinding and strategy.
But to get Secret Letters, you first need Secret Letter Clues. Think of it like this: Secret Letter Clues are the raw materials, Secret Letters are the keys, and Covert Commissions are the treasure chests.
How to Farm Secret Letter Clues Efficiently?
I’ve spent countless hours figuring out the most efficient ways to farm Secret Letter Clues, and I’m going to share my best strategies with you. Here are all the methods I’ve found:
Daily Commissions (15 Clues per Day)
This is your most consistent source of Secret Letter Clues. Every day, you can complete daily commissions to earn 15 Secret Letter Clues. I make it a habit to knock these out first thing when I log in – it’s quick, easy, and adds up over time.
Main Story and Side Quests
When I was starting out, I focused heavily on clearing the main story and major side quests. These reward you with generous amounts of Secret Letter Clues. I recommend pushing through the story as quickly as possible early on, as this will give you a nice stockpile of clues to work with.
Chest Opening and Exploration
Don’t ignore those chests scattered throughout the world! I’ve found that opening chests while exploring can give you additional Secret Letter Clues. It might not seem like much, but every little bit helps when you’re saving up for a new character.
Achievement Completion
Duet Night Abyss has a robust achievement system, and many achievements reward you with Secret Letter Clues. I like to check my achievement list periodically to see if there are any easy ones I can complete for some extra clues.
Weekly Game Modes
Once you reach the endgame, you’ll have access to weekly game modes that provide substantial Secret Letter Clue rewards:
- Mystic Maze: Gives 30 Secret Letter Clues weekly
- Immersive Theater: Can reward up to 280 Secret Letter Clues every refresh
- Nocturnal Echoes: Weekly bosses that reward Secret Letters for specific characters
Events
The developers regularly run events that reward Secret Letter Clues or even direct Secret Letters. I always make sure to participate in these events, as they’re often the most time-efficient way to stock up on resources.
Covert Commissions: Your Key to New Characters
Once you have Secret Letters, you’ll want to run Covert Commissions. These are special missions that you can access after completing the side quest “Go, Geniemons!” I remember being a bit intimidated by this system at first, but it’s actually quite straightforward once you understand it.
Covert Commissions are divided into three categories:
- Character Commissions (for Character Thoughts)
- Weapon Commissions (for Weapon Blueprints)
- Demon Wedge Commissions (for Demon Wedges)
Each category has missions that rotate every hour. The objectives change, but the reward pools stay the same. When you complete a Covert Commission, you’re presented with three reward options, and you can choose one.
The reward tiers are:
- Bronze Tier: Character EXP materials
- Silver Tier: 2 Character Thoughts
- Gold Tier: 10 Character Thoughts
Here’s the thing – the Gold Tier rewards have only a 10% drop chance, so you’ll need to run several commissions to get enough thoughts for a character. But don’t worry, I’ll share my strategies for optimizing this process.
Advanced Farming Strategies
After months of playing, I’ve developed some pretty efficient farming strategies that I want to share with you. These have helped me unlock characters much faster than when I was first starting out.
Focus on One Character at a Time
This is probably the most important tip I can give you. When I first started, I made the mistake of spreading my Secret Letters across multiple characters, trying to unlock everyone at once. Big mistake! It’s much more efficient to focus all your resources on one character until you unlock them, then move on to the next.
Choose the Right Secret Letters
Not all Secret Letters are created equal. Some characters’ Secret Letters are easier to farm than others. I recommend checking which characters have Secret Letters available in the shop versus those locked behind endgame modes. Start with the ones that are more accessible.
Optimize Your Commission Runs
I’ve found that certain commission objectives are much faster to complete than others. Since the objectives rotate every hour, I like to check the available missions and focus on the ones that can be completed quickly. Escort missions, for example, tend to be faster than survival missions.
Team Composition Matters
Make sure you have a strong team before attempting Covert Commissions. These missions are set at level 40, so you’ll need properly leveled characters and weapons. I recommend focusing on building a solid core team before diving too deep into commission farming.
Premium Currency Options
Now, I know some of you might be wondering about spending money to get characters faster. While I personally prefer the free-to-play approach, I understand that some players want to speed things up. Here’s what you need to know about the premium options:
Phoxene Plumules
This is the premium currency in Duet Night Abyss. You can use it to buy Character Thoughts directly from the shop. Here’s the breakdown:
- 150 Phoxene Plumules = 1 Character Thought
- 4500 Phoxene Plumules = Complete character unlock (30 thoughts)
Is It Worth It?
Honestly, I don’t recommend spending money on characters unless you really want to support the developers. Since every character can be obtained through gameplay, and the game is quite generous with resources, I find that the free-to-play experience is completely viable.
New Character Release Schedule
One thing I love about Duet Night Abyss is how transparent they are about new character releases. Unlike traditional gacha games where new characters might be locked behind impossible odds, Duet Night Abyss has a clear release schedule:
- First 28 Days: New characters are featured in the Immersive Theater mode
- After 28 Days: Characters move to the Nocturnal Echoes weekly boss rotation
- Finally: Characters become available in the Secret Letter Clues exchange shop
This system is actually pretty fair if you think about it. It gives dedicated players early access to new characters while ensuring that everyone can eventually unlock them through normal gameplay.
Character Enhancement and Progression
Unlocking a character is just the beginning. To make them truly powerful, you’ll need to invest in their progression. Here’s what I’ve learned about character enhancement:
Intron System
Think of Introns as similar to Constellations in Genshin Impact or Eidolons in Honkai Star Rail. These are character upgrades that significantly boost their power. You can obtain Introns by collecting additional Character Thoughts beyond the initial 30 needed for unlocking.
Weapon and Equipment
Each character has signature weapons that synergize well with their abilities. I recommend focusing on unlocking and upgrading these weapons alongside your characters. The weapon system works similarly to characters – you need to collect Weapon Blueprints and then craft them using resources.
Leveling and Ascension
Don’t forget to actually level up your characters! Use Combat Melodies for character XP and Weapon Manuals for weapon XP. I made the mistake early on of unlocking characters but not properly leveling them, which made some content much harder than it needed to be.
My Personal Experience and Tips
After spending hundreds of hours in Duet Night Abyss, I’ve learned a few things that I wish I knew when I started:
Patience is Key
The character acquisition system in Duet Night Abyss rewards patience and consistent play. Unlike traditional gacha games where you might get lucky and get a 5-star character early, here you need to put in the time. But honestly, I prefer this system – it feels more rewarding when you finally unlock that character you’ve been working towards.
Daily Habits Matter
I’ve found that establishing daily habits makes a huge difference. Completing my daily commissions, checking in on weekly resets, and participating in events has allowed me to build up a impressive roster without spending any money.
Join the Community
The Duet Night Abyss community is incredibly helpful. I’ve learned so much from other players about optimal farming routes, team compositions, and upcoming events. Don’t be afraid to ask questions or share your own discoveries!
2026 Common Mistakes to Avoid
Based on my experience and what I’ve seen from other players, here are some common mistakes you should avoid:
Spreading Resources Too Thin
I mentioned this earlier, but it’s worth repeating. Focus on one character at a time rather than trying to unlock everyone simultaneously.
Neglecting Story Progression
Some players get so focused on farming that they neglect the main story. Big mistake! The story not only gives you free characters but also unlocks important game systems and provides valuable resources.
Ignoring Event Rewards
Events are often the most efficient way to get resources. I’ve seen players miss out on limited-time characters or valuable resources because they didn’t participate in events.
Forgetting About Weapon Progression
Characters are only as strong as their weapons. Make sure you’re also investing in weapon blueprints and crafting materials alongside your character farming.
Frequently Asked Questions
How long does it take to unlock a character in Duet Night Abyss?
The time varies depending on how much you play, but I’ve found that with consistent daily play, you can unlock a new character every 1-2 weeks. If you’re more casual, it might take 3-4 weeks per character.
Are there any characters that can only be obtained with real money?
No! One of the best things about Duet Night Abyss is that every character can be obtained through gameplay. The only things that require real money (or premium currency) are cosmetic items like skins.
What’s the fastest way to get Secret Letter Clues?
In my experience, the fastest way is to focus on daily commissions, weekly game modes, and events. The Immersive Theater mode is particularly generous if you can clear it efficiently.
Can I unlock characters without doing Covert Commissions?
While Covert Commissions are the primary method, you can also buy Character Thoughts directly with Phoxene Plumules if you prefer to spend money rather than time.
How many characters are available in Duet Night Abyss?
At launch, there are 19 characters available, with more planned for future updates. The developers have been pretty good about releasing new characters regularly.
Is it better to save Secret Letters or use them as I get them?
I recommend using them as you get them, but focusing on one character at a time. There’s no benefit to hoarding Secret Letters since you’ll need to run commissions to get Character Thoughts anyway.
Final Thoughts
Duet Night Abyss has really impressed me with its approach to character acquisition. As someone who’s played my fair share of gacha games, I can honestly say that this system is a breath of fresh air. No more frustrating RNG, no more feeling like you have to spend money to progress – just good old-fashioned gameplay and progression.
The key to success in Duet Night Abyss is consistency and smart resource management. Focus on your daily tasks, participate in events, and don’t be afraid to take your time building up your roster. Remember, this is a marathon, not a sprint.
I hope this guide helps you on your journey to unlock all the characters in Duet Night Abyss. If you have any questions or want to share your own tips and strategies, feel free to leave a comment below. Happy gaming, and I’ll see you in the abyss!
Want more Duet Night Abyss content? Check out our other guides on character builds, weapon crafting, and endgame progression. Don’t forget to bookmark this page for future updates as new characters are released!