Deus Research Base — Dungeon bosses

Before you enter

Group dungeons for arcana; points for every mob and boss open the way to the final boss.

Points for every mob and boss open the way to the final boss, so clear the starting mobs as soon as the door opens and everything at the first teleporter. Avoid the purple puddles.

Dungeon bosses

Gelcos

First boss — electric whip ▶ 14:51

Charge and puddles ▶ 15:09

His whip hits hurt on weak gear; a debuff that reaches three stacks makes you explode with lightning in all directions. He marks a player and charges twice, leaving an electric puddle each time — the marked player drags him to a corner so the puddles don't cover the arena. Then he pounds the ground from the middle: dodge the zones before the big whip hit.

wipe The great whip ▶ 16:03

A large ring appears and he swings the great whip in every direction for colossal damage — run out of the ring or block it with skills.

Nazmun

Second boss ▶ 16:18

Easier: he hits in front, three devices send electric threads around in a circle — jump them — and he puts a big ticking zone on players: carry it away from the group. Dodge his bombs.

Atiel

Final boss ▶ 16:51

Thread and shared hit ▶ 16:51

She pulls the group together and a thread links the players — run apart to break it. Then she roots a player: everyone runs into that circle to share the damage. Waves fly out that hurt and stun briefly — find their rhythm — while a wind pushes you to the edge, which explodes and shrinks at the end.

wipe Last stagger ▶ 17:32

Copies rush across the arena like a train while a red thread punishes going too far from her. Then she spawns a stagger bar, but the wind blows melee off — close in with skills and break it while dodging her pizza hits. If the bar holds, the run fails.

Read the cue: spread or stack

A link between players means move apart to break it. A target circle with four arrows pointing inward means gather on that player to share the hit. Do not run away from the stack marker or gather for the tether.

Global · player report · checked 2026-10-15 r/Aion2 · Deus stack and spread cues · 2026-10-12

Sources for this guide

Based on BIGSKALA’s Taiwan walkthrough and linked player reports. Added notes state their difficulty or older-client scope; mechanics may differ by version. Boss names come from game data. Mechanic headings are descriptive, not official skill names; diagrams are simplified.