Solus Wing requires following the Alloyed Collective DLC path. It cannot be reached on a standard run without finding an Access Node on Stage 3.
On any Stage 3, find and interact with the Access Node (a red blinking bomb-like object). More common on Iron Alluvium (AC DLC Stage 3). After completing the teleporter event a Virtual Portal appears.
Enter the portal to reach Conduit Canyon (AC DLC Stage 4). Collect Sentry Keys from elite enemies. Use them to hack the 3 barriers blocking your path, then decrypt the Encrypted Teleporter. Keep at least one spare Sentry Key for Computational Exchange later.
Defeat the Solus Control Unit and Alloy Hunter in Conduit Canyon. Take the teleporter to Solutional Haunt.
In Solutional Haunt, proceed through the tunnel. A cutscene triggers and the door closes. Fight Solus Wing.
You need a spare Sentry Key later to access Solus Heart via the Computational Exchange. Save at least one when clearing Conduit Canyon rather than spending all of them on the barrier terminals.
Solus Wing's 1,000 armor makes it nearly immune to direct damage. The only way to fight it effectively is through its four Memory Module weak points located around its eye and on top of its head. Destroying each module deals fixed damage and permanently strips 25% of its armor.
| Modules Destroyed | HP Damage Dealt | Armor Remaining | Effect |
|---|---|---|---|
| 0 | 0% | 1,000 | Near-immune to damage |
| 1 | ~20% | 750 | Still very tanky |
| 2 | ~40% | 500 | Damage resistance reducing |
| 3 | ~60% | 250 | Noticeably vulnerable |
| 4 (all) | ~80% | 0 | Full damage - phase transitions triggered |
Destroy the four Memory Modules at a steady pace rather than focusing one at a time. Each destroyed module triggers a phase transition that adds new attacks. Destroying them slowly gives you time to adapt to new attacks before the next phase begins. Weak point hits from proc chains now deal 25% less damage following a patch - raw aim beats proc reliance here.
Attacks are added progressively as Solus Wing loses HP. Early phases are manageable. The final Heat Vent phase is the most dangerous and requires active environmental management.
Fires sets of destructible purple spheres that slowly home toward the target and explode on contact or when destroyed. Destroy them at range to avoid the explosion. Good for proc-chain builds.
Creates a ring of blue walls that expands outward. Also creates a central knockback pulse. Use vertical movement via ziprails, energy pipes, or ramps to rise above the ring.
Charges and fires a giant laser that tracks the target. Arena fills with bright light while it fires. Hide behind a solid wall, ramp, or Engineer's Bubble Shield. Coolant Distributors do not block it. Engineer's Bubble Shield completely blocks all laser damage.
Creates a grid of lasers on the floor or ceiling with large gaps between them. Move through gaps. Avoid bottom-floor ramps at this stage - laser grids spawn there with almost no reaction time.
Fires an uneven ring of red walls. Heat Vents and Coolant Distributors emerge from the ground (invulnerable until this phase). Heat Vents apply Overheat stacking identical to Grandparent's Solar Flare. Shoot Coolant Distributors to create safe cool zones that cleanse burn/Overheat and deal stacking burn to Solus Wing. Also spawns Solus enemies around the arena.
The blue ring expansion is the most frequent attack and requires going above it. Use ziprails for the fastest height gain, or use the energy pipes, outer ramps, and multi-floor arena structure. Any survivor without flight items should memorize the ziprail positions on entry.
The final phase adds Heat Vents and Coolant Distributors to the arena. This is where most players die if unprepared.
Create enormous heat zones identical to the Grandparent's Solar Flare. Apply stacking Overheat every 0.5s. Above 2 stacks, each tick applies Burn scaled by stack count. Invulnerable until Solus Wing is severely damaged. Do NOT shoot these.
Shoot these to activate cool zones. Creates a safe radius that cleanses Overheat and Burn, and deals stacking burn damage to Solus Wing. Activate 3-4 and rotate between them. This is the safest way through the phase while dealing passive damage.
There is a brief window after Overheat begins before Burn stacks start dealing significant damage. You can briefly venture into a heat zone without dying instantly. Stay mobile, keep rotating between active Coolant zones, and continue hitting Memory Modules when possible.
Prioritize Memory Modules every time you have a clear shot. In early phases destroy them at a controlled pace to manage phase transitions. When new attacks appear, learn the dodge pattern before resuming module pressure. In the Heat Vent phase, activate Coolant Distributors immediately and use them as safe positions to deal damage from.
Learn the ziprail positions on entry. The blue ring attack comes frequently and the fastest way to get above it is ziprails. Identify their locations as soon as you enter the arena before the fight begins.
Save Engineer's Bubble Shield for the laser. The giant tracking laser deals extreme damage. Engineer's Bubble Shield completely blocks it but has limited uptime. Do not waste it on other attacks. Use it the moment the arena lights up signaling the laser charge.
Shoot Coolant Distributors, not Heat Vents. Activating a Coolant Distributor creates a safe zone and deals burn to Solus Wing passively. Heat Vents are invulnerable anyway until late-phase. Activate 3-4 Coolants and rotate between them.
Avoid bottom-floor ramps at 50% HP. Laser grids can spawn from the bottom floor with almost no reaction time. Once the laser grid attack is in the pool, stay on middle or upper floors.
Destroy modules evenly. Each destroyed module triggers a phase transition. Destroying one at a time gives phase changes in large jumps. Spreading damage across all four modules before popping them gives you more warning as new attacks arrive.
After the fight, look for Drifter. Two caves open after Solus Wing dies. One contains Elite Alloy Vultures and loot. The other contains two Solus Coffers with Prison Matrix items needed to free Drifter from her prison in the main arena. If you want to unlock Drifter, grab both Matrices before leaving.
Vertical mobility and I-frame skills have the biggest advantage. Survivors who can hit multiple weak points simultaneously or have powerful escape tools for ring attacks are top picks.
Sojourn mobility hits multiple weak points simultaneously, making Memory Module destruction fast. Strong self-sustain through Meditate helps recover between burst attacks. The combination of multi-target weak point hits and healing makes Seeker the wiki's top recommended pick.
Eviscerate I-frames dodge the blue ring, laser, and grid attacks cleanly. High mobility keeps him close to weak points. Focused Assault can burst a Memory Module in one animation. The I-frame toolkit makes every dangerous attack avoidable with good timing.
Ion Surge flight trivializes blue ring dodging and laser grid navigation. Cooldown-based burst is not penalized by the high armor since weak point hits bypass standard armor calculations. Flame barrier blocks purple sphere blasts. Snap Freeze can briefly stagger Solus Wing.
Bubble Shield completely blocks the giant tracking laser - save it exclusively for this. Turrets passively deal weak point damage while Engineer focuses on survival. Place turrets near Memory Modules before engaging. Turret-inherited items continue DPS during Heat Vent phases.
The AC DLC character handles phase transitions well through Junk management. Repossess generates Junk while repositioning. Junk Cube melee burst on weak points. Having Drifter-friendly items (movement speed, AoE damage) already in inventory before the fight helps significantly.
Grapple hook gives good vertical mobility for blue rings. However, Loader's melee-focused kit requires fighting close to the boss which becomes increasingly dangerous in the final Heat Vent phase. Charged Gauntlet burst is excellent for popping Memory Modules but requires close range during active attacks.
Slowest movement speed creates real difficulty dodging the blue ring expansions and laser grids. High HP and armor help absorb hits. Nail gun can maintain DPS on weak points at range. Heat Vent phase is significantly more dangerous for MUL-T given limited mobility.
Memory Modules are the four weak points on Solus Wing located around its eye and on top of its head. Destroying each one deals fixed damage equal to roughly 20% of Solus Wing's max HP and permanently reduces its armor by 250 (25% of the base 1,000). Destroying all four removes all armor and deals roughly 80% of its total HP in damage. Destroy them evenly to control when phase transitions happen.
Solus Wing has 1,000 base armor, making it almost immune to normal damage. You must destroy Memory Modules to reduce its armor. Each destroyed module removes 250 armor. Until you destroy at least two or three modules, most attacks deal near-zero damage to the main body. Focus weak points first.
Shoot the Coolant Distributors, not the Heat Vents. Activating a Coolant Distributor creates a safe cool zone that cleanses Overheat and burn, and deals stacking burn damage to Solus Wing. Rotate between 3-4 active Coolant zones. The wiki notes there's a brief window before Overheat converts to Burn, so you can briefly venture into the heat if needed.
Hide behind a solid wall or ramp. Engineer's Bubble Shield blocks it completely. Coolant Distributors do NOT provide cover from the laser. The arena has multiple ramps and solid structures that work as cover. When the arena lights up bright, immediately move behind the nearest solid obstacle.
After defeating Solus Wing, explore the two caves accessed from the top-left and top-right of the arena. In one cave find two Solus Coffers and collect both Prison Matrix items inside them. Return to the arena, find the Matrix Terminal at the locked door, and use both Prison Matrices to open Drifter's prison. Completing this also unlocks the Lost in Transit challenge.
Solus Wing drops the Encrypted Cerebellum, which is required to access the hidden true final boss, Solus Heart. A portal also opens through Solus Wing's eye leading to Computational Exchange where the Solus Heart access chain begins.
Find an Access Node on any Stage 3 (more common on Iron Alluvium). Activate it to spawn a Virtual Portal after the teleporter event. Go through to Conduit Canyon, collect Sentry Keys, hack 3 barriers, defeat Solus Control Unit and Alloy Hunter, then take the teleporter to Solutional Haunt where Solus Wing waits.
