Aion 2 Deus Research Base Guide: Atiel Boss and Arcana Rewards

The leaderboard

From 5 October to 2 November 2026 (30 September on the Advanced Access servers), clearing Deus Research Base or Shattered Arkanis earns Rank Points. You can check them under ESC > Transcendence > Rank > Class. Rankings are per server and per class, so you compete with your own class on your own server. NCSOFT announces the top rankers on 9 November and mails rewards by 16 November.

The route

This walk-through comes from Korean community guides.

1. Take the wind path up to a fork. Go left for Gelcos.
2. Come back to the fork and take the right-hand corridor to Nazmun.
3. Glide down into the big arena, kill enough enemies to fill the quota, and Atiel opens in the centre.

The quota in Korea was 110 points at its old stages 1–3, 130 at 4–6 and 150 at 7–10. A normal enemy gives 2 points. A boosting-site guide (unconfirmed) logged 45 for each mid-boss on a Korean stage 1 run, which on its own leaves 20 to make up from trash. There are four Kisks on the way (entrance, the collapsed sky island, the workshop and the top floor). Bind every one, because binding them counts toward the quota too. If you fall off the early stepping stones, walk right to an updraft that carries you back up.

Stage traits

In Korea each stage adds Transcendence traits on top of the bosses. Korea's ten stages mapped roughly like this:

• Stage 1: no traits.
• Stages 2–3: one trait, Toxic Blood.
• Stages 4–6: two traits. Rage adds damage below 50% health, and the Soul Knotters appear.
• Stages 7–10: Judgment and Resistance. Each boss hit stacks Judgment, and at three stacks a damage pool drops under you. Resistance makes stagger gauges larger.

Gelcos

Korean sources and the patch notes call him Guard Captain Gelkos.

• Charge and whip: he picks the farthest player, charges, then follows up with a whip that leaves a blue damage zone on the ground. The marked player drags it away from the group. Don't leave the zone where the others stand.
• Centre jump: he leaps to the middle for a huge circular blast. Once it lands, a safe area forms close to him, so move in, not out.
• Electric zones: he electrifies the edge of the arena and the fight gets smaller. Korea fixed a bug in January 2026 that put these zones behind him instead of at the edge.
• Higher stages: a boosting-site guide (unconfirmed) describes the floor darkening and pulling players in before a whip. In Korea's top stages every ground hit was close to lethal.

Nazmun

Korean sources call him Lab Director Nazmun.

• Frontal laser: three in a row straight ahead. The tank turns him; everyone else stays at his sides.
• Rotating lasers: turrets sweep around the room. Move with the beam or jump it.
• Time bombs: electric turrets around him that explode. A hit leaves you unable to act. Since Korea's January 2026 patch he places three instead of four so there is always a gap. Find it and stand in it.
• High-Voltage Current Zone: a control effect on one player, who should step away from the group. It used to go to whoever stood closest, but since January 2026 in Korea it picks a random target, so standing far away no longer keeps you safe.
• In Korea's top stages the turrets rotate faster and their hits drain stamina or deal heavy damage.

Atiel

Atiel is the fight that decides your rank. Stay near the middle. Every mechanic in her room either pushes you outward or breaks the floor at the edge.

Chains. She tells you that you can't escape her, and two random players are chained with damage over time. The two run apart to break it. If a root lands at the same time, break the chain first. In Korea's later stages all players are chained to one player in the middle, and everyone moves away from that player.

Root and shatter. She roots one player and calls for a falling strike. Alone, it kills. Everyone else stacks in that player's circle to split the damage.

Chained to her. From Korea's stage 4 onward she chains the whole party to herself. The further away you are, the more damage the chain does, so hug the boss. A boosting-site guide (unconfirmed) describes the same thing as blue chains to Atiel.

Cataclysmic World — the floor breaks. She goes to the centre, sends knockback waves in every direction, and then the outer floor collapses. Jump or dodge the waves and stay near the middle. Falling means death, no resurrection, and no way back into the room. After the collapse, portals spawn clones. Korean sources put the two collapses at 75% and 35%. In December 2025 Korea fixed staggering her during this skill still triggering the knockback, so a stagger now cancels the push.

The last stand. At low health she announces that everything will shatter and vanish, then opens a stagger gauge with a sliced-pie area attack (NCSOFT's own tips add a four-way cone and portal attacks). The gauge has to be emptied before the cast ends, or the last of the floor goes and the group goes with it. It happens once. Hold every stagger skill for it.

Korea added a voice line to her root in January 2026. If you hear her call out a target, someone is about to be rooted.

How long it should take

On the global servers the median kill on stage 1, read from a DPS meter's uploads, is 3:47 on Atiel, 2:10 on Gelcos and 1:58 on Nazmun. On stage 3, Atiel's median rises to 4:26. Since leaderboard points scale with time, and Korea paid less after the first death, a careful clear will place better than a fast one with a death in it.