Learn the encounter before your next pull. This guide is an original English synthesis of reviewed YouTube captions and official Korean mode rules. Follow the specific difficulty and source version shown below.
Mechanic instructions follow the cited gameplay explanation. HP percentages identify approximate phase triggers, not a guaranteed attack timeline.
Entry, difficulty & preparation
Navigate the axe corridors and collapsing platforms without lingering. Unlock checkpoints before continuing so a fall does not force the whole group to repeat the route.
| Check | What to use |
|---|---|
| Mode covered | Hard |
| Group | Up to 5 — current Korean party format |
| Entry requirements | Select this dungeon and difficulty in the entry panel. Check character level, item level, minimum party size and remaining entries there. The reviewed mechanic videos do not establish a current numeric admission threshold. |
| Before pulling | Agree assignments, activate available checkpoints, clear pursuing enemies and prepare movement, defensive and stagger skills. |
Evidence: NC · Expedition rules ↗ · Madsin · Citadel of the Fallen Daeva ↗
Willful Turgen
The group creates the problem with its sword drops, then solves it with the targeted lines. Keep both steps deliberate.
| Tell / phase | Your response | Why it matters |
|---|---|---|
| Spread marks drop swords | Place swords in reachable positions without overlapping teammates. | Swords deal heavy damage nearby. |
| Party-directed lines after sword sets | Aim each line through a sword to destroy it. | Ignored swords explode and apply a lasting penalty. |
| Expanding blasts / frontal swipes | Move after each resolved ring and stay clear of the tank’s cleave lane. | The sequence continues after the first impact. |
Evidence: Madsin · Willful Turgen · 0:15 ↗
Forbidden Hexbeast Griosa
Prepare for two consecutive cone-and-circle sets. The same player may receive the cone twice.
| Tell / phase | Your response | Why it matters |
|---|---|---|
| Personal circles plus one large cone | Circle targets drop away from the cone. Cone target stays close, then crosses through the boss when the cone locks. | Overlapping the two mechanics removes escape space. |
| Shrinking rings followed by share | Avoid the final close blast, then join the stack near the boss. | Standing outside the share is punished as well. |
| Feather pillars | Assign fast hits to clear pillars if the fight is long. | Unchecked pillars fill the room with stunning projectiles. |
Basilus the False
Use clear colour and circle assignments. Spend time on mechanic coverage rather than trying to heal through multiple failed objects.
| Tell / phase | Your response | Why it matters |
|---|---|---|
| Yellow / black shield above your head | Remember your colour. Use the later personal area to destroy ground shields of the opposite colour. | Leftover shields cause heavy raid-wide damage. |
| Coloured cone floor | Stand in the cone matching your own colour while also passing through gaps in the soldier rows. | Matching colour does not protect you from moving soldiers. |
| Seven circles around the boss | Cover as many separate circles as possible; then group to remove the souls spawned by unoccupied circles. | Unresolved souls explode when the cast ends. |
| Lines during soul removal | Marked player aims the knockback line away from teammates working on souls. | A knockback can eject the whole group from the required area. |
| Jumpable pulse after expanding rings | Jump the final pulse before the next shield mechanic. | A damage-tolerance penalty makes subsequent shield drops more dangerous. |
Evidence: Madsin · Basilus the False · 4:33 ↗
Tank, healer & DPS assignments
Strategy recommendationSuggested preparation for this encounter. These assignments are editorial recommendations based on the mechanics above.
| Role | Assignment |
|---|---|
| Tank | Keep frontal sequences clear and avoid pulling the boss through active swords. |
| Healer / support | Prepare recovery after shared hits; stay in range during soul removal. |
| DPS | Destroy swords with lines, cover separate circles and target the correct shield colour. |
Evidence: Madsin · Citadel of the Fallen Daeva ↗
After a wipe: fix the cause
Strategy recommendationName the failed mechanic before the next pull. Check whether the target moved too early, the group missed its assignment, or a required cooldown was unavailable. Reassign a backup for any job that can target its original owner. Surviving the mechanic comes before completing a damage rotation.
- Call the next mechanic before the HP threshold; the actual cast may occur later.
- If a hit-count object is involved, use fast direct hits rather than assuming a long damage cooldown is better.
- Save burst for a real vulnerability window after the group has completed its movement.
- Check the current entry panel for loot probabilities and reward availability before spending another run.
Evidence: NC · Expedition rules ↗ · Madsin · Citadel of the Fallen Daeva ↗
Sources & research scope
Original English synthesis. Video explanations establish the encounter strategy for the cited version; official Korean pages establish mode, entry and reward rules. Review date: 29 September 2026.
NC · Expedition rules ↗
Current Korean rules, read 29 September 2026. Admission and reward rules are separate from the older encounter footage.
Madsin · Citadel of the Fallen Daeva ↗
Hard · source encounter rules. Reviewed captions; HP triggers are approximate and can be delayed by current actions or stagger. English boss names are lookup labels, not a claim of Global localization.
Madsin · Willful Turgen · 0:15 ↗
Encounter explanation begins here. Mechanic facts summarized in original English; coordination advice is editorial.
Madsin · Forbidden Hexbeast Griosa · 1:38 ↗
Encounter explanation begins here. Mechanic facts summarized in original English; coordination advice is editorial.
Madsin · Basilus the False · 4:33 ↗
Encounter explanation begins here. Mechanic facts summarized in original English; coordination advice is editorial.