Boss prequest · Boss · 5 runs/week

Cygnus Empress expedition prequest

Boss ✔ Hand-written guide 2 in-game checks open

Type	Boss
Stage	Endgame
Level	170+
Rebirth	12+
Weekly runs	5 (`@weekly`)
Party	2–12 players.
Where	Knights map: Hallowed Ground / Knight District 2
Before this	Von Leon

Empress Cygnus is the top of BeyondMS's original boss ladder. You need Rebirth 12, level 170–200, 5 successful Von Leon runs, and a Dream Key made from 200 each of three stones. Each run costs 5,000,000 mesos.

Requirements

Level 170–200 and Rebirth 12+.
Von Leon: 5 successful runs.
Party: 2–12 players. Mesos: 5,000,000 per run. Weekly: 5 clears.
Weekly runs: 5 per week. Type @weekly in-game to see how many you have left.
Do first: Von Leon

Walkthrough

0 / 4

Clear Von Leon five times
See Von Leon.
Hunt the stones
In Hallowed Ground (on the Knights map), hunt 200 × Blaze Stone (from Blaze), 200 × Wind Stone (from Wind) and 200 × Night Stone (from Night). Needs in-game check: exact map names/IDs for Hallowed Ground and the Blaze/Wind/Night monsters
Make the Dream Key
Hand the stones to the Informant in Knight District 2 for a Dream Key.
Fight Empress
HP 62,000,000,000 (temporarily 72b in a later log), 60-minute timer. Rewards: Perfect Pitch (now 120) and 1 Cygnus Point per clear.

Entry and runs

Gear: Von Leon gear and weapons can be upgraded to Empress gear. A swap to another class costs 15 points (or 50,000,000 mesos after the June 2026 change).

Needs in-game check

The Discord guides don't settle these yet. If you know the answer, please update data/sections/bosses/empress.md.

exact map names/IDs for Hallowed Ground and the Blaze/Wind/Night monsters
Where the Empress expedition NPC stands, and whether one Dream Key is used per run.

Sources

Official BeyondMS guide: Boss Expedition → Cygnus Empress by BeyondMS team (fetched Oct 2026). Prerequisites, HP, timer, rewards, Dream Key.
#change-logs (May 28, 2026 UTC) by Cara (Developer) (May 28, 2026). Empress added; weekly count 5; 1 Cygnus point per clear; Von Leon Success Attempts: 5. Later logs: HP temporarily 72b; EXP reward 700,000,000; Perfect Pitch 140 → 120 (Aug 1, 2026).
Weekly run limits by Andrew (in-game knowledge) (Oct 11, 2026). Check your own remaining runs in-game with @weekly.

Discord posts are from the BeyondMS server's #guides forum and announcement channels. Discord links only open if you're a member of the server. NPC, map, item and monster details come from the v83 game data (Cosmic). Images are from the original Discord posts.

Guide file data/sections/bosses/empress.md.