Welcome to our Liberation of Undermine Guide, for the second Raid coming to The War Within expansion!
In this detailed breaktrough we're diving straight into an epic 8-boss showdown! Set in the wild, war-torn streets of the Goblin Trade Empire, this raid throws you face-to-face with the ruthless Chrome King Gallywix and his army of mechanical horrors. It's chaos, it's carnage, and our guide will surely help you conquer it as fast as it gets!
If you're looking for a broader look at the Raid itself, be sure to check out our full Liberation of Undermine Overview, where we cover raid difficulties, item ilvl drops, new tier sets, the Gallagio Loyalty Rewards Club, and much more!
Liberation of Undermine Raid OverviewDid you check the overview by clicking the link above? Alright, now let’s get straight to the core!
Get ready to face 8 explosive bosses in Liberation of Undermine, each one a perfect blend of chaos and Goblin genius. Here's the list of fierce foes you'll battle as you navigate the high-tech, danger-filled streets of Undermine:
The boss order for Liberation of Undermine is subject to change, although the first encounter will remain the same. Each boss presents its own set of challenges and mechanics, ensuring a dynamic experience that will keep your group engaged from start to finish.
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Our adventure kicks off with Stix, the menacing goblin, who throws bombs and dirt around, terrorizing the helpless residents while hiding behind his mechanical minion.
The battle kicks off with a simple single-target phase, where tanks should position Stix Bunkjunker at the center for easy access to melee DPS and healers. Keep an eye out for Incinerator, which forces players to spread out to prevent overlapping damage zones. Early on, players will encounter the ball transformation mechanic and bomb management.
Six players are chosen to transform into Rolling Rubbish balls. While a ball, you should:
🟦 Keep rolling over small piles of garbage to make yourself larger.
🟦 Steadily progess through small, medium and large ball stages by simply collecting garbage.
🟦 Upon reaching full Charge, either collide with the boss to deal a substantial damage to him or strike a bomb to neutralize it.
Large bombs will periodically appear and must be deactivated by players in their larger ball form. The first bomb is typically managed by the tanks, while other designated players take care of additional bombs as the fight progresses. Failing to neutralize the bombs will lead to a raid wipe.
As the fight advances, Territorial Bombshells tethered to garbage piles will spawn. These really need to be dealt with swiftly:
🟦 Players must free the adds by reducing their health to 75%, breaking their tether, and then finishing them off within 30 seconds.
🟦 Failing to do so will trigger explosions, causing significant raid-wide damage.
🔔 During Overdrive, Stix Bunkjunker becomes untargetable and flies into the air, dealing raid-wide damage and unleashing abilities like Trash Compactor, which knocks players back. Position carefully to avoid being knocked into hazards. After Overdrive, the boss returns with increased attack speed and more frequent bomb spawns, escalating the fight's intensity.
⚡ Bombs Away: Assign tanks and specific players to handle bombs during both phases, making sure no bomb gets left behind. ⚡ Ad Control is Key: Stay on top of Territorial Bombshells by prioritizing them and managing clusters with cleave damage. ⚡ Healers, Stay Alert: Keep a close eye on raid-wide damage during Overdrive and the stacking debuff from ignited garbage piles. ⚡ DPS: Maximize boss uptime during calm phases, but be ready to swiftly switch to adds when needed. ⚡ Avoid the Fire: Steer clear of igniting garbage piles with Incinerator Circles, as they make bomb management harder and add extra stress to the group. ⚡ Consider getting personal coaching from the best PvE Pros out there!
Sprocketmonger Lockenstock presents a fast-paced, mechanically demanding encounter. With conveyor belts, explosive mines, and increasingly complex weapon mechanics, this battle tests players' ability to handle overlapping hazards with precision. To help your team succeed, here’s a complete guide to the fight. Let’s first start by examining the arena hazards, as understanding them is crucial for this encounter.
The Sprocketmonger encounter stands out due to the critical role the terrain plays throughout the fight. To help you navigate this challenging battle, let’s dive into the two key terrain mechanics that will be pivotal to your success against this boss.
The arena features several conveyor belts with unique hazards to navigate:
🟦 Central Belts: Filled with traps and holes, these belts are highly dangerous. Avoid stepping on them, as they can knock players back or even result in instant death.
🟦 Side Belts: Often safer, these belts can act as reliable safe zones during specific phases. Use them strategically to stay out of harm’s way.
🟦 Holes: These gaps are difficult to spot but can cause instant death or disrupt your positioning. Stay vigilant and steer clear of them to remain effective in the fight.
Sprocketmonger periodically places four mines on the ground:
🟦 These mines need to be detonated one at a time to prevent raid-wide damage.
🟦 Heroic Difficulty: Players must organize into groups to stagger mine detonations, ensuring that multiple explosions don’t occur simultaneously.
🟦 Failing to coordinate detonations properly can result in overlapping debuffs, excessive damage, and avoidable player deaths. Clear communication is key!
Alright, now we can proceed to the phases, of which there are many!
As the battle begins, players need to spread out and establish clear positions to manage Foot Blaster Mines effectively. Sprocketmonger will deploy mines that must be detonated strategically to prevent excessive raid-wide damage. Divide your raid into groups and assign each group to a specific mine to stagger the detonations. This ensures that the stacking debuff doesn’t overwhelm the raid.
During this phase, steer clear of the central conveyor belts, as they are filled with traps and holes that can knock players into hazardous areas or cause instant death if misstepped. Use the edges of the arena for safer positioning, and stay mobile to dodge any additional threats.
Tanks need to be prepared for the Tank Bomb Mechanic, which places a slowing debuff and a bomb on the active tank. The affected tank must move away from the group to avoid spreading the damage. Coordinate taunt swaps efficiently to manage this mechanic and minimize its impact on the raid.
At this stage, the boss pushes players toward the central conveyor belts, which become electrified, adding a layer of danger and forcing constant movement. Stick to the edges of the belts to minimize damage and steer clear of debuff zones, which can reduce healing effectiveness and cause dazes. Additionally, the belts are riddled with lightning hazards that must be dodged, so stay alert and keep moving to avoid unnecessary damage.
This phase is all about survival. Healers should prioritize keeping the raid stable while players reposition and dodge hazards. Use any downtime to regroup, recover from earlier mistakes, and prepare for the challenges in the next phase. Staying focused and coordinated is key to making it through this stage successfully.
Learn to play this encounter and all the others in both Raids and Mythic+ from our PROs.
As the fight progresses, Sprocketmonger introduces increasingly dangerous weapon mechanics, escalating the intensity of the encounter:
With the mechanics escalating, players must adapt quickly, maintain focus, and communicate effectively to survive the chaos and keep the fight under control.
As the battle intensifies, overlapping mechanics push the raid to its limits. Mines, lasers, rockets, and magnetic pulls can activate together, creating chaotic and dangerous moments. To overcome this phase, your team must stay sharp and execute flawlessly:
Clear heads, quick reactions, and strong teamwork are essential to navigating this phase and securing a path to victory.
During the final phase, the boss uses an upgraded version of the Conveyor Survival Mechanic, electrifying the belts and knocking players back. Players must carefully navigate the belts, staying near the edges for safer and faster movement while dodging lightning zones.
The objective is to survive the hazards and quickly return to the boss to resume dealing damage. Melee players can use the side belts to maintain uptime on the boss, while ranged players should prioritize finding safe zones to free-cast while avoiding hazards.
The boss also enhances earlier mechanics, introducing larger beams and faster rockets, making the fight more challenging. Discipline and avoiding unnecessary deaths are critical to securing victory.
The One-Armed Bandit brings a casino-inspired twist to the raid. With slot machine mechanics, casino chips, and tokens in play, this encounter challenges players to carefully balance their priorities while managing increasingly complex overlapping mechanics. We’ll start by breaking down the boss’s abilities, followed by phase-specific tactics and strategies to guide your team to victory.
| Ability | Description | Strategy |
| Casino Tokens | Rolls blue casino chips that stun players hit for 8 seconds but grant a haste buff if avoided properly. | Stand close enough to avoid the stun and receive the haste buff or destroy them to avoid risks. |
| Slot Machine Adds | Three types of adds spawn at full energy: Coin Assistant, Shock Assistant, and Flame Assistant. Each drops a token upon death. | Quickly nuke the adds and collect two unique tokens to deposit into the boss. |
| Token Combinations | Depositing tokens into the boss triggers specific mechanics depending on the combination. | Rotate through unique token combos to manage mechanics and avoid repeating a combo. |
| Shocking Fields | Tank mechanic that leaves electric fields on the ground with each tank hit. | Tanks can clear fields by activating coils, which spawn additional mechanics. |
| Beam Coil Mechanic | The boss spawns a coil and creates a deadly beam between the coil and itself. | Avoid the beam at all costs; players marked for beams must position carefully to avoid wiping the raid. |
| Fixating Bomb Adds | Adds spawned from specific token combos that fixate on players and explode if not killed. | Cleave the adds quickly and stay away from their target paths. |
| Phase 2 Mechanics | In the final phase, the boss randomly chooses mechanics while applying heavy raid-wide damage. | Prioritize survival and damage output to defeat the boss before reaching enrage. |
The battle starts with the boss cycling through its core mechanics, which involve adds, tokens, and casino chips. Successful coordination is crucial for surviving this phase.
Once the boss reaches full energy, it spawns three adds: Coin, Shock, and Flame. Each add drops a specific token when defeated.
Players need to gather two tokens and deposit them into the boss using an extra action button.
🟦 Each pair of tokens activates a unique mechanic that the raid must manage. The six possible combinations are:
🟦 The boss throws casino chips, creating a high-risk, high-reward mechanic:
Players must decide whether to shoot the chips into the raid for buffs or safely direct them toward the walls to minimize risk.
The boss starts randomly selecting previously activated mechanics and combining them with the ongoing raid damage:
Beam Coils: Coils connect to the boss with deadly beams that must be avoided.
Fixating Adds: Adds chase players, demanding quick coordination to manage safely.
Scattered Payout: Raid-wide damage escalates quickly, pushing healers to their limits.
The randomness of add spawns and token combinations makes every attempt at the Boss rather unpredictable.
By Phase 2, electric fields from the tank mechanic will cover most of the arena. Players must navigate through these fields while managing beams, casino chips, and other mechanics, ensuring they maintain safe zones for movement.
As the boss nears the end, it triggers Scattered Payout, causing massive raid-wide damage. The fight turns into a DPS race to defeat the boss before the final mechanic, which leads to an instant wipe.
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Mug'Zee is a two-headed enforcer guarding the penultimate chamber of the raid. This encounter is dynamic and chaotic, with mechanics split across two modes based on which side of the room the raid favors. Each head presents its own unique challenges, demanding precise coordination, positional awareness, and adaptability to succeed. Mug brings explosive chaos, while Zee introduces icy discipline, leading to an intense final phase where both sets of mechanics overlap.
The encounter begins with Mug’s mechanics dominating the battlefield. The raid must focus on managing mines, soaks, and tank mechanics.
Mug periodically spawns Unstable Crawler Mines that fixate on random players. To handle these, the fixated player must intentionally allow the mine to reach them and detonate. Upon detonation, the mine spawns Cluster Bombs, creating several small soak zones that the raid must cover.
🟦 Assign players to specific mines or designate a high-mobility tank or DPS to detonate multiple mines if possible.
🟦 All cluster bomb soak zones must be covered quickly, as even a single missed soak can result in catastrophic raid-wide damage.
Mug targets a random player with a high-damage beam. The tank must intercept the beam by stepping in front of the targeted player, minimizing the damage they receive.
🟦 Make sure the targeted player stops moving to allow the tank to position properly.
🟦 The player hit by the beam gains a bomb debuff, which must be dropped away from the group.
Mug delivers a frontal cone attack. The boss must always be faced away from the raid to prevent unnecessary damage to the group. Clear as many mines and cluster bombs as possible before moving to Zee’s side to minimize leftover mechanics that could complicate the next phase. Players should start positioning themselves near the center of the room once Mug reaches 50% energy.
Switching to Zee introduces a completely new set of mechanics that demand precise coordination and controlled movement.
Or.. If you’re still struggling after several attempts, don’t hesitate to ask for help from our PROs!
Two players (one melee and one ranged) are chosen to soak Jail Wall Zones, which create line-of-sight barriers. These zones trap the players inside with two adds that must be defeated in order to escape.
🟦 Assign high-DPS players to these roles to ensure the adds are killed quickly.
🟦 Players outside the jails should focus on managing external mechanics while the trapped players deal with the adds.
Players outside the jails are targeted by Ice Spears, which must be redirected to hit barriers (such as walls, leftover bombs, or the jails) to prevent lethal damage.
🟦 Targeted players should carefully plan their movement to ensure the Ice Spears hit valid barriers while avoiding other group members.
🟦 If barriers are used effectively, the spears can also help manage leftover mechanics, such as mines or bombs.
Tanks must manage a debuff that drops harmful golden pools on the ground.
Kite Zee around the room to place the pools in low-traffic areas, ensuring they don’t block group movement or create danger zones during transitions. After handling two cycles of Zee’s mechanics, the group must transition back to Mug. Clear any golden pools near the center of the room to maintain a clear and safe path during the transition.
In the final phase, Mug and Zee merge their mechanics, resulting in a chaotic overlap of all previous abilities. Coordination becomes crucial for survival.
🟦 Mines and Cluster Bombs from Mug’s side will overlap with Zee’s Ice Spears and Jail Walls. Assign clear roles for each mechanic to avoid duplication of efforts.
🟦 Tanks must continue managing Golden Drip while ensuring the Intercept Beam is properly mitigated.
🟦 Healers should stagger cooldowns to handle the escalating raid-wide damage caused by the overlap of Mug’s and Zee’s mechanics.
🟦 DPS players should maximize their output while prioritizing survival, as the phase has a hard enrage.
This phase requires flawless execution of mechanics learned in the first two phases, leaving little room for error. Assign roles clearly and focus on surviving until the boss is defeated.
The PTR is still ongoing, so Blizzard could surprise us with additional changes before the release of the Liberation of Undermine raid. Once everything is finalized, we’ll update this article to thoroughly cover all the the bosses in the Raid!
