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
Coordinate stagger before entry. The source is a Hard clear with a failed stagger attempt shown for comparison; no numeric admission threshold is established by that clip.
| 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 ↗ · Games On · Consumed Deus Research Base ↗
Overseer Gromkas
This is the newer Expedition version, separate from the Transcendence dungeon named Deus Research Base.
| Tell / phase | Your response | Why it matters |
|---|---|---|
| Whip leaves lightning ground | Leave the field immediately and place the frontal lane away from the group. | The persistent damage is much more dangerous than a single whip hit. |
| Normal attacks | Use rear positioning and reserve defence for attacks you cannot leave safely. | Standing in front adds avoidable pressure. |
Evidence: Games On · Overseer Gromkas · 0:08 ↗
Xailus — laboratory director
Activate the three field devices before flying to this boss. English spelling is a working lookup label for 자일러스.
| Tell / phase | Your response | Why it matters |
|---|---|---|
| Three frontal lasers | Move off the front or use an appropriate block. | The sequence has repeated hits. |
| Personal red field on one or two players | Targets separate from each other and from the group. | Bringing the field into teammates damages and stuns them. |
| Arena laser paths | Watch the ground while moving between targets. | Tunnel vision makes an otherwise simple phase expensive to heal. |
Arrogant Atiel
Read what the tether connects to. “Tether means run away” is incorrect for the boss-linked version.
| Tell / phase | Your response | Why it matters |
|---|---|---|
| Cross markers | Spread the crosses and leave their locked positions. | Overlapping crosses can kill immediately. |
| Players tethered to a teammate | Separate to break the tethers, then promptly return for the grabbed player’s shared hit. | Running away is only the first half. |
| Tethers attach directly to the boss | Stay near Atiel rather than continuing the previous spread instruction. | Excess distance causes repeated damage. |
| Red wind / central cast | Use saved stagger skills together while avoiding the rotating danger. | The source demonstrates a wipe when the stagger bar remains. |
| Grab / close lunge | Sidestep or move behind the boss before contact. | A missed grab dodge can become lethal for a non-tank. |
Evidence: Games On · Arrogant Atiel · 2:24 ↗
Difficulty changes & encounter details
The creator compares this with the original Transcendence lab, but this page only carries mechanics actually described for the Consumed version.
Evidence: Games On · Consumed Deus Research Base ↗
Tank, healer & DPS assignments
Strategy recommendationSuggested preparation for this encounter. These assignments are editorial recommendations based on the mechanics above.
| Role | Assignment |
|---|---|
| Tank | Keep the frontal area clear and anticipate the grab. |
| Healer / support | Move with the tether target, then prepare healing for the return share. |
| DPS | Equip stagger and hold it for red wind; spread cross markers decisively. |
Evidence: Games On · Consumed Deus Research Base ↗
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 ↗ · Games On · Consumed Deus Research Base ↗
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.
Games On · Consumed Deus Research Base ↗
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.
Games On · Overseer Gromkas · 0:08 ↗
Encounter explanation begins here. Mechanic facts summarized in original English; coordination advice is editorial.
Games On · Xailus — laboratory director · 1:08 ↗
Encounter explanation begins here. Mechanic facts summarized in original English; coordination advice is editorial.
Games On · Arrogant Atiel · 2:24 ↗
Encounter explanation begins here. Mechanic facts summarized in original English; coordination advice is editorial.
NC · Chapter 1 dungeon introduction ↗
Official identity and boss names: Gromkas, Xailus and Atiel. Mechanics remain attributed to the reviewed Hard video.