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11 Atiel (아티엘) is the final boss of Deus Research Base, one of AION 2's two launch Transcendence dungeons, and returns as Atiel of Arrogance (오만의 아티엘), the headline boss of the level 50 Expedition Consumed Deus Research Base. In the official Chapter 1 story Atiel was the subject Atheron had the highest hopes for, and Atiel's rampage destroyed the research base. Deus Research Base is one of the two dungeons of the global Transcendence Dungeon Leaderboard; everything below describes the Korean and Taiwanese service.
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34 Deus Research Base
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56 Atiel appears in the base's central arena once the party has collected enough points by killing monsters and the two earlier bosses, Guard Captain Gelcos and Research Director Nazmun. Community strategy guides on the Korean service agree on these patterns:
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78 PatternHow it worksChainTwo random players are linked and take constant damage until they move apart. On the highest stages of the old ten-stage ladder it became a chain from one centre player to three othersMark and bindOne player is marked and bound for a falling strike that has to be shared by other players standing in the circle; alone it is close to lethal, and if it overlaps the chain the chain is broken firstFloor collapseAtiel goes to the centre and knocks everyone outward while the outer floor collapses; it happens twice per run, and a fall cannot be revivedStagger checkLate in the fight Atiel starts a slice-shaped attack with a constant push; the party must stagger Atiel within the window or wipe, and there is only one windowFists and grabTwo ground punches and a circular blast; players who are too far away add cross-shaped blasts. Atiel also grabs a player
89 Players keep everyone except the tank behind Atiel at a short distance. Stages 4 to 6 of the old ladder added a pattern that chained everyone to Atiel, so the party had to stay close or take damage. Atiel's lines are shouted before each mechanic, for example a cry that no one can escape before the chain.
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1011 Consumed Deus Research Base
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1213 In the Expedition version the Korean patch notes name several of Atiel's skills while fixing them: Mortal's Shackle (필멸자의 굴레), Ring of Fate (운명의 고리), Earth Collapse (대지 붕괴), a cross-shaped explosion, a binding charge and a grab. Fixes on August 19, 2026 stopped Mortal's Shackle and Ring of Fate being applied at the same time, made the cross explosion fire reliably, and stopped Earth Collapse pushing players out during a stagger. Ring of Fate could at first be ignored with invulnerability skills such as the Cleric's Salvation; that was blocked on August 19 and then made a deliberate counter on August 26, 2026. On September 9 one of Atiel's skills was made avoidable with Focused Block or Evasion Stance, and a September 2 fix matched the hit timing of one skill to its animation in both dungeons. Killing Atiel of Arrogance breaks the floor of the arena (August 19 fix).
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1415 Fix History in Deus Research Base
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1617 Date (KR/TW)ChangeDecember 10, 2025Cataclysmic World (격변하는 세계) no longer knocks players back after being interrupted by staggerJanuary 7, 2026Dialogue added for the binding skillSeptember 2, 2026Hit timing of one skill matched to its animation
1718 Related Pages
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1920 Deus Research BaseConsumed Deus Research BaseTranscendence System