If you’re targeting Psyche in Duet Night Abyss, the good news is simple: she’s free. The game’s character unlocks run on a predictable loop built around Secret Letters, Covert Commissions, and a timed rotation for new releases. Here’s the fastest way to add the scythe‑wielding attacker to your roster and what to farm along the way.

Psyche unlock overview: what you actually need

  • Requirement to unlock: 30 Psyche Thoughts.
  • Primary source: Covert Commissions (Character category) using Secret Letter: Psyche.
  • Alt path: buy Psyche directly in the in‑game shop with Thoughts (cost: 150 Thoughts).
  • Progress gate: all Covert Commissions are level 40, so clear enough story and gear your starter before grinding.

When you complete a Covert Commission with a Secret Letter, you choose one of three rewards. Character Thoughts are in the pool, but they’re rare: a gold‑tier drop of 10 Thoughts has a 10% chance to appear, so expect multiple runs to hit 30 Thoughts for your first unlock.

Path 1: farm Covert Commissions with Secret Letter: Psyche

Covert Commissions are accessed via Combat > Covert Commissions and split into three categories: Character, Weapon, and Demon Wedge. For Psyche, pick the Character tab and slot a Secret Letter: Psyche.

  • Finish the objective (these rotate hourly by type and difficulty).
  • On the reward screen, pick Thoughts whenever they appear.
  • Repeat until you’ve collected 30 Psyche Thoughts, then unlock her via Reminiscence.
Tip: the mission objectives rotate, but the reward pool tied to your chosen Secret Letter does not. If you only care about Psyche, only spend her letters.

Where to get Secret Letter: Psyche (launch rotation and beyond)

New characters follow a clear, three‑step path for their Secret Letters. During the launch window, Psyche sits in the first phase:

Stage Where to farm What you can get
Days 1–28 after her release Immersive Theater Secret Letter: Psyche (up to 65 letters during the feature window) and 50 letters for her signature weapon
After day 28 Nocturnal Echoes (weekly bosses) Secret Letter: Psyche added to weekly boss rewards
Later (ongoing) Secret Letter shop (Clue exchange) Buy Secret Letter: Psyche with Secret Letter Clues

This design makes early target farming straightforward if you can clear Immersive Theater with high ratings, and it keeps Psyche attainable long‑term via weekly bosses and the shop.

Efficient ways to stockpile Secret Letter Clues

You convert Clues into Letters at a 10:1 ratio. Focus on repeatable sources first, then tap one‑time rewards as you progress.

  • Main story and major side quests: consistent early injections of Secret Letter Clues.
  • Daily and weekly objectives: completing your dailies grants 15 Secret Letter Clues; weeklies add more.
  • Mystic Maze (weekly): 30 Secret Letter Clues each week.
  • Immersive Theater: up to 280 Secret Letter Clues each refresh, plus featured Secret Letters during the new‑character window.
  • Nocturnal Echoes (weekly bosses): Secret Letters for the newest characters, and Psyche after her 28‑day feature ends.
Note: if you’ve exhausted pre‑registration and early rewards, your steady income will shift to dailies, weeklies, and endgame modes until the pool replenishes.

Path 2: buy Psyche directly with Thoughts

If you’d rather skip the roll of the reward screen, the in‑game shop offers a direct purchase: exchange 150 Thoughts for the character. This uses the same Thoughts currency you can earn from Commissions, so the path you choose comes down to whether you value certainty (150 Thoughts) or time‑to‑first‑unlock (30 Thoughts if your drops cooperate).

Covert Commissions basics that matter for Psyche

  • All Commission missions are level 40. If you’re struggling, push the main story and build your starter before returning.
  • Objectives rotate hourly across Character, Weapon, and Demon Wedge tabs. The rotation affects the task, not the reward pool of your chosen Letter.
  • Each clear presents three items from the Letter’s pool; you choose one. High‑value options like 10 Thoughts have low odds (10%).

Because of the low odds on large Thought bundles, plan on a few hours of farming for a guaranteed unlock via Commissions. The Immersive Theater window helps by supplying lots of the right Letters up front.

Install on PC (if you’re just starting)

Duet Night Abyss is available on the Epic Games Store. Use the game’s product page to install on PC: Duet Night Abyss on Epic Games Store.

After you unlock Psyche: upgrades and cosmetics

Keep farming Secret Letters even after Psyche joins your roster. You’ll use them to:

  • Unlock Introns (character‑specific upgrade nodes comparable to constellations/eidolons) that significantly increase power.
  • Chase weapon blueprints and Demon Wedges; once a blueprint drops, you can forge the item with materials from the same Letter pool.

Cosmetics are handled separately. Outfits live in the Myriad cosmetic gacha, which uses Hourglasses and a pity system. You’re guaranteed a purple‑rarity item every 10 pulls, and hard pity after 90 rolls grants 25 Iridescent Prisms, which can be exchanged for the featured skin. Gold‑rarity items have a 0.3% drop rate, including the featured outfit and Iridescent Prism bundles. Pity is banner‑specific and does not carry over.

Quick reference: Psyche unlock paths

Path What you spend Outcome Best use case
Covert Commissions (Character) Secret Letter: Psyche (from Immersive Theater, Nocturnal Echoes, or Clue exchange) Randomized rewards; collect 30 Thoughts to unlock Active play with targeted Letters during her feature window
Shop purchase 150 Thoughts Immediate unlock Players with a large Thought reserve who want certainty

The takeaway is straightforward: if Psyche is currently featured in Immersive Theater, prioritize that mode to amass her Secret Letters, then run Character Commissions until you hit 30 Thoughts. If you miss the window, shift to Nocturnal Echoes weekly bosses and the Clue exchange to keep steady progress. Either approach gets Psyche without spending money; pick the mix that best fits your time and roster needs.