Phantom Corridor is an expedition dungeon added to AION 2 in the Season 3 update on April 8, 2026. The dungeon is structured as four progressive stages, each gated by higher gear requirements than the last, with mechanics density and boss complexity scaling alongside the gate. The exact item-level threshold for each stage is not yet documented in publicly available patch notes; check the in-game expedition UI for the current values. Phantom Corridor sits at the center of current endgame as the primary source of Fragment: Yustiel's Trace, the material feeding the Daevanian Yustiel progression path.
Modes and Stages
Phantom Corridor is available in Normal and Hard difficulty. Both modes share the same four-stage structure but apply different gear requirements and reward distributions. The four stages must be cleared in order; you cannot enter Stage 3 without clearing Stage 2 first within the active expedition window.
Stage | Item-Level Gate | Notes |
|---|---|---|
Stage 1 | See in-game UI | Introductory boss room; teaches the chain mechanics that recur in later stages |
Stage 2 | See in-game UI | First multi-phase boss; introduces split-target mechanics that punish single-target builds |
Stage 3 | See in-game UI | Mid-expedition checkpoint; aerial mechanics begin to layer over the ground rotation |
Stage 4 | See in-game UI | Final boss; drops Mysterious Ode and Fragment: Yustiel's Trace |
Loot and Rewards
Phantom Corridor's loot loop is built around three currencies and one named drop. The material curve favors weekly engagement: clearing the dungeon three times during the active rotation grants a guaranteed bonus reward on top of the per-clear drops, which is the largest single source of Yustiel's Trace for most players.
Reward | Source | Use |
|---|---|---|
Mysterious Ode | Final-stage boss drop | Higher chance of top-grade roll than the standard Shining Ode tier; primary weapon-progression currency for current endgame |
Fragment: Yustiel's Trace | Final-stage boss drop and stage milestones | Material for the Daevanian Yustiel Hero / Unique upgrade paths and Yustiel Daevanian Points |
Bound Kina | Stage milestones and exploration rewards | Standard expedition currency; spends on stage-clear vendors |
Three-Clear Bonus | Awarded on the third weekly clear in the active rotation | Guaranteed Yustiel-tier reward bundle that anchors the weekly loop |
Mechanics Overview
Phantom Corridor leans on the same hybrid combat fundamentals as the rest of the game (see Combat and Skill Chains) with three recurring layers that thread through every stage:
Chain echoes. Boss attacks in Phantom Corridor frequently apply a debuff that triggers a delayed echo of the same attack. Players must dodge twice on the same telegraph rather than once.
Vertical phases. Several bosses force a transition into aerial combat mid-fight, forcing the party to manage flight gauge alongside the rotation. Grounded melee classes have to adapt or rely on aerial-friendly party members during the phase.
Stage carryover. Buffs and debuffs from one stage carry into the next; a sloppy clear of Stage 2 often makes Stage 3 noticeably harder than it would be on its own.
Composition Notes
Phantom Corridor was designed as group (8-player) content. The standard composition is two tanks, two healers, and four DPS with a mix of ranged and melee. Single-tank attempts on Hard mode are possible but unforgiving; the second tank covers swap mechanics in Stage 4. Healers should expect to push raid-wide cooldowns on every chain echo phase, since the doubled telegraph hits the party twice in quick succession.
All four DPS classes (Assassin, Ranger, Sorcerer, Elementalist) lost their party-wide synergy effects in the Season 3 dev passes. See Classes for the details. The implication for Phantom Corridor is that DPS contribution is now strictly personal: bringing more support classes (Cleric, Chanter, Templar, Gladiator) is the way to scale group output, not stacking DPS classes.
Tips
Hit the item-level gate for the highest stage you intend to clear before entering. Returning to gear up mid-expedition wastes the active rotation timer and slows the weekly loop.
Prioritize the three-clear bonus on Hard mode if you are gear-checking. The bonus reward bundle clears the gap to the next item-level gate faster than chasing individual drops.
Save flight gauge for the vertical phase. Burning flight on positional adjustments earlier in the fight will cost you when the phase forces full powered flight on a short rotation.
Track Yustiel's Trace alongside Mysterious Ode. Players who only chase weapon drops often end up gear-locked at the next Yustiel stage.