Liberation of Undermine Raid Guide - Full Boss Strategies & Tips.

Raid Overview

Liberation of Undermine is an 8 boss raid introduced in The War Within season 2. Set in the subterranean goblin capital of Undermine, the raid revolves around overthrowing the corrupt Trade Prince Gallywix and mysterious forces that have seized control over Undermine.

• Location: Undermine, Khaz Algar
• Entrance Coordinates: 41.90, 50.10 (Outside the Incontinental Hotel)
• Minimum Level Requirement: Level 80

Boss Lineup

1. Vexie and the Geargrinders – A frenetic scrap yard brawl
2. Cauldron of Carnage – A deadly alchemical gauntlet
3. Rik Reverb – A soundwave wielding DJ gone rogue
4. Stix Bunkjunker – A demolitionist with a love for explosives
5. Sprocketmonger Lockenstock – A tinkerer with deadly contraptions
6. The One Armed Bandit – A high stakes gamble with lethal consequences
7. Mug’Zee, Head of Security – A brutish enforcer with devastating crowd control
8. Chrome King Gallywix – The ultimate showdown with the chrome plated tyrant

Boss Strategy Highlights

Boss 1: Vexie and the Geargrinders

Fight Overview:
A battle against Vexie and her mechanized minions, featuring timed phases, add management, and precision mechanics.

Core Mechanics

1. Protective Plating

• Vexie begins each phase shielded by 4 (Normal) or 6 (Heroic) layers of armor.
• Destroying all layers triggers Phase 2.
• Enrage Timer: Fail to break all armor within 2 minutes, and the raid is wiped.

2. Call Bikers

• Geargrinder Bikers charge across the battlefield.
• Defeat them to claim their bikes, then use ability "1" to target Vexie and strip one armor layer per hit.

3. Tank Alert: Tank Buster

• Vexie’s heavy strike deals escalating damage with each use.
• Tank Strategy: Swap roles after each strike to manage debuffs.
• In Heroic mode: Leaves a hazardous Oil Slick under the boss.

4. Heroic Mechanic: Oil Slick

• Targets marked with purple circles must drop Oil Slicks near the arena’s edges.
• Pro Tip: Allies with Incendiary debuffs can clear the Oil slick by crossing them.
• Warning: Bike launches fail if aimed through oil patches.

5. Mechanical Breakdown: The burn phase (Bloodlust window)

• Triggered by removing all armor, granting a 45 second window of amplified damage.

6. Pit mechanics

• Minions that rush Vexie and try to cast  ‘repair’ to shorten the Overload Phase.
• Counterplay: Interrupt, CC, or eliminate them quickly.
• unchecked repairs cut into your DPS window.

Boss 2: Cauldron of Carnage

Fight Overview:
A chaotic dual boss encounter where coordination, positioning, and split second reactions determine victory. Teams must divide, conquer, and adapt to fiery and electric devastation.

Core Mechanics

1. Duel of Elements.

• Blistering Spite (Fire Boss) & Galvanized Spite (Lightning Boss)
  • Each boss radiates a stacking debuff within 60 yards.
  • Key Rule: Keep them far apart—proximity reduces their damage taken and accelerates the debuff stacks.
  • Execution: Teams must swap bosses after each phase and synchronize kills.

2. Team Assignments

Split the raid into two groups:

Flarendo (Fire Team)

• Tank Role: Kite the boss along the arena’s edge to avoid spreading fire patches.
• Scrapbomb Soak: All members must group to absorb explosion damage.
• Laser: One marked player leads a tracking laser away from the team, then dodges once it locks.
• Heroic Mechanic: Fire Circles force the team to spread temporarily.

Torq (Lightning Team)

• Static Charge: Builds when moving; standing still drains it.
  • Overcharge = 6 second stun (Heroic: AoE stun for nearby allies).
• Thunderdrum Salvo: Marks players with homing projectiles, stutter step to evade and avoid maxing the static charge.
• Heroic Mechanic:  Summon voltaic images that fixate and chase players, CC or outrun these chasing constructs; their explosions leave hazardous zones.

3. Collision Phase: Colossal Clash

• Both bosses charge to the center, enabling cleave damage but escalating raid wide AoE.
• Danger Zones:
  • Red Swirls: Expanding shockwaves from the impact—dodge outward.
  • Blue Swirls: Lightning strikes—sidestep on sight.

Boss 3: Rik Reverb

Fight Overview:
A high tension battle against a sonic wielding foe, where precise energy management, burst execution, and split second positioning are key to survival.

Core Mechanics

1. Amplifier Control

•  The boss summons Amplifiers (one at its feet, one on a random player).
  • Danger: Amplifiers gain energy over time—faster if near the boss.
  • Solution: Players must channel to drain them (click and hold).
  • Heroic Risk: Draining applies a stacking DoT—rotate assignees!
  • Fail Condition: Full energy = raid wipe.

2. Resonant Echoes

• When cast, all active Amplifiers fire Resonant Echoes projectiles.
  • Impact: Stacks a nasty DoT.

3. Faulty Zap

• Marks random players with delayed AoE circles.
  • Effect: Heavy damage + increase damage taken by  Nature attacks.

Role-Specific Challenges

Tank Alert: Sonic Blast

• Every melee swing unleashes a frontal cone.
  • Debuff: Stacks increase Sonic damage taken—swap tanks after it fades.

Heroic Exclusive: Sparkblast Ignition

• Five explosive barrels spawn—destroy them fast!
  • Bonus: Attacking barrels grants Haste/Movement Speed buffs.

Phase Shift: Blaring Drop

• Boss becomes immune:
  1. Stand in a blue circle Amplifier to get launched over the ring.
  2. Dodge Resonant Echoes!

Boss 4: Stix Bunkjunker 

Fight Overview:
A chaotic, physics-driven battle where players become living wrecking balls in a hazardous scrapyard. Precision rolling, explosive management, and add control are key to dismantling this mechanical menace.

Core Mechanics

1. Electromagnetic Sorting (Main Mechanic)

• Rolling Rubbish: 1 tank + 4 random players turn into rolling orbs.
  • Goal: Fill the encounter bar by rolling over objects:
    • Part 1: Roll over 4 small Garbage Piles (fills 50%).
    • Part 2: Roll over 4 large Garbage Piles or Scrapmasters (completes bar).
  • Dangers:
    • Rolling into allies stuns them.
    • Avoid boss collisions (Heroic: Dodges Territorial Bombshells).
  • The objective is that:
    • Enough players crashes into all the Discarded Doomsplosives
    • Others ram the boss for bonus damage.

2. Incinerator (Environmental Hazard)

• Random players are marked with small AoE circles.
  • Critical Rule: Never hit Garbage Piles—they turn into Hot Garbage, stacking a permanent raid wide DoT.
  • Auto Ignite: Each cast burns the nearest pile(s).

3. Adds & Priority Targets

• Scrapmasters: Interrupt Scrap Rockets.
• Junkyard Hyenas: Melee attackers (Heroic: Apply a healing reduction disease).
  • Pro Tip: Roll over adds to make them take double damage.

Role Specific Challenges

Tank Alert: Demolish

• A magic damage Tank Buster that increases all damage taken.
  • Swap Immediately: Taunt after each cast.

Heroic Exclusive: Territorial Bombshell

• Three bomb adds spawn on large Garbage Piles.
  • Strategy: Damage bombs to 75% HP to free them from piles.
  • Things to Avoid:
    • Rolling Rubbish players must evade bombs.
    • One explosion is manageable; multiple can cause a wipe.

Phase Shift: Overdrive

• Trigger: After two garbage cycles.
• Boss Immunity: 99% damage reduction—dodge ground swirlies until he crashes down.
• Permanent Escalation:
  • Extra Doomsplosives, +2 Bombshells, more adds, and 25% faster attacks.

Boss 5: Sprocketmonger Lockenstock

Fight Overview:
A frenetic battle against an unstable inventor, where players must navigate shifting hazards, dodge deadly contraptions, and carefully manage escalating mechanical threats. Timing and coordination are key to surviving this volatile encounter.

Core Mechanics

1. Wire Transfer (Arena Hazard)

• The arena is divided into four segments, two of which are electrified at any time.
  • Pattern Shift: The safe and dangerous zones rotate periodically.
  • Strategy: Memorize the pattern and stay mobile.

2. Screw Up (Player Debuff)

• Random players are marked to drop screws for 3 seconds.
  • Avoidance: Keep moving and steer clear of the boss to prevent clutter.

3. Activate Inventions (Phase Mechanic)

• Activate the current invention that are on theConveyor belts:
  • Blazing Beam: Dodge fire lines.
  • Rocket Barrage: Evade the rockets.
  • Mega Magnetize: Pulls players in to be stunned.

4. Upgraded Inventions (Phase Escalation)

• After each Phase 2, inventions become deadlier:
  • 1st Upgrade: Void Beams (wider lasers).
  • 2nd Upgrade: Void Barrage (rockets splash damage on hit).

Role-Specific Challenges

Tank Alert: Pyro Party Pack & Gravi-Gunk

• Gravi-Gunk: Stacks on the tank, increasing damage taken and slowing movement.
  • Swap at ~5 stacks.
• Pyro Party Pack: Tank receives a pulsing AoE—move away from the raid.

Heroic Exclusive: Foot Blasters

• Landmines spawn in safe zones.
  • Soak Order: Assign 8 players to trigger mines in sequence.
  • Debuff Warning: Each mine increases damage taken from others for 2s—time your steps carefully.

Intermission: Beta Launch

• Knockback + Arena Electrification:
  • Rally at the boss to avoid lethal floor damage.
  • Dodge disorienting swirlies.
• Permanent Ramp Up (Enrage): Boss gains damage after each intermission.

Boss 6: One Armed Bandit

Fight Overview:
A high-stakes gamble against a mechanized monstrosity where luck is replaced with strategy. Deposit the right symbols, manage deadly pylons, and survive escalating chaos to hit the jackpot—victory!

Core Mechanics

1. Spin to Win! (Symbol Management)

• Reel Assistants spawn with symbols over their head (Flame, Coin, Bomb, Shock).
  • Kill & Collect: Pick up dropped symbols by walking over them.
  • Deposit Combo: Use 2 unique symbols via Extra Action Button.
    • Fail Condition: Repeat a combo or take too long → boss gains 500% damage.

2. Pylon:
Summoned pylons will activate during every spin to win phase or when clicked.

• Activation: Click to retrigger effects + remove the nearest 2 Shocking Fields.
  • Risk: Clicker takes massive Physical damage—assign designated players.

3. Pay Line (Coin Mechanic)

Telegraphed by blue lines.

• Rolling coins stun players on contact; 
• Near misses grant a damage buff.
  • Disposal: The coins fall after hitting a wall, Use the Extra Action Button to launch them again and destroy them.
  • Any unused coin increase the damage done by the boss.

4. Withering Flames (Debuff Spread)

• Reduces max HP until dispelled—stand away before cleansing to avoid spreading fire waves.

Role Specific Challenges

Tank Alert: The Big Hit

• Tankbuster + Shocking Field: The tank that receives the hit will have to drop a shocking field at the edge of the arena.
  • Swap after every cast.

Enrage Phase: Cheat to Win (30% HP)

• 1:40 Timer: Boss cycles lethal mechanics:
  1. Linked Machines: Pylons beam to boss.
  2. Hot Hot Heat: Dodge targeted beams.
  3. Scattered Payout: Raid wide damage spike.
  4. Explosive Jackpot: Wipe mechanic.
• Survival Tip: 
• Tanks must kite the boss slowly around the room.
• Players marked with red arrows must move away from the group.

Boss 7: Mug’zee: The Showstopper

Fight Overview:
A high octane performance where players must dance between deadly mechanics, precise positioning, and rapid role swapping to survive this chaotic spectacle. Every phase demands perfect coordination—miss a cue, and the show ends badly for your raid.

Core Mechanics

1. Head Honcho (Phase Control)

• Side Swap Mechanic: The boss’s abilities change based on which side has more players.
  • Energy Management: Swap sides before 100 Energy to avoid a wipe.
  • Trade off: Switching clears stacks of Moxie (damage buff) but applies a DoT.

2. Earthshaker Gaol (Team Coordination)

• Two players are imprisoned in Gaols, requiring:
  • 5 Players Each (including 1 healer) to split damage.
  • Isolation: Gaols can’t overlap; boss must stay outside.
  • Escape: Interrupt Pay Respects, dodge frontal attacks, and kill the add to get out.

3. Frostshatter Boots (Movement Puzzle)

• Targets random players outside Gaols, making their movement "slippery."
  • Frostshatter spear: After a short delay, a lethal Spear fires—aim it at a Gaol wall or risk stunning teammates.

4. Stormfury Finger Gun & Spray and Pray (Positioning Checks)

• Electric Cone (Finger Gun) / Bullet Cone (Spray and Pray):
  • Marked players must stand still so others can dodge.

Add Management

• MK II Electro Shockers: Summons 2 Electro shockers that spam cast Chain lightning —at 80% they get stunned and take 100% increased damage e.
• Crawler Mines (Heroic): Detonate by running into them (healthy players only).
  • Soak Rules: In heroic each player can only trigger one mine; missed soaks deal raid damage.

Goblin Guided Rocket 

• Soak: Targeted player must go to the edge of the arena and requires half the raid to absorb the damage.
  • Heroic Twist: Players can only soak every other rocket.

Phase Escalation

Bulletstorm (40% HP Enrage)

1. Charges to a random location (Static Charge).
2. Spins while unleashing Bulletstorm—dodge by standing directly in front/behind.
3. Mug’Zee Repeat the same sequence 3 times.

Phase 2: All Abilities Active

• Boss cycles Phase 1 mechanics simultaneously with +30% Haste.
  • Race Against Time: Reach 100 Energy = wipe.

Role-Specific Challenges
Double Whammy Mechanics

• Targeting: Selects a player and creates a visible line between them and the boss.

• Tank Role:

  • The tank must intercept the line to block the attack.

  • Damage to the original target is reduced based on the tank's mitigation.

Tank Alert: Molten Gold Knuckles

• Tankbuster + Knockback: Launches the tank across the arena, leaving debuff stacks.
  • Mitigation: Move along the edge to drop pools and clear stacks—or get stunned for 30 seconds.
  • Swap after every cast.

Final boss: Gallywix, the Chrome King

Fight Overview:
A volatile battle against a mechanized tyrant, where players must juggle bomb disposal, split second positioning, and escalating mechanical threats. Coordination is key, mismanage the explosions, and your raid will be reduced to scrap metal.

Core Mechanics

Team Assignments

Split the raid into two groups:

1. Scatterblast Canisters (Split Damage)

• Frontal Cone Attack: Aimed at the tank, split between two groups.
  • Alternate Soaks: Groups must take turns absorbing damage.
  • Healing Check: All hit players receive a healing absorb debuff.

2. Big Bad Buncha Bombs (Explosive Management)

• Bombs: High damage AoE abilities that apply stacking damage over time effects to players hit..
  • Sapper’s Satchel: Marked players must isolate to avoid damaging friendly players.
  • Heroic Twist:
    • Extra bombs require careful placement.
    • Tanks must manually click the 1500 Pound “Dud” Bombs, taking high damage and getting knockback.

2. Tank mechanics:

• Gallywix does not move from the middle of the map.
  • Gattling cannon: Does more damage if you are not in melee range.
  • Trick shots:
    • Stacks every 5 seconds
    • Tanks should swap on at least 10 stacks.

3. Phase 2: Giga Coils & Bombs.

• Adds & Bombs:
  • Darkfuse Technicians spawn at 100 Energy, dropping Giga Bombs on death.
  • Bomb Disposal:
    • One player carries a bomb to Giga Controls (exposed gate).
    • Others throw bombs into the center to avoid detonation.
  • Giga Blast: Deadly line attacks—dodge while managing bombs.

4. Fused Canisters (Stacking Mechanic)

• Timed Explosives: Marked players must group in pairs before detonation.
  • Fail Condition: Unstacked players apply raid wide healing absorbs.

Phase Escalation

Intermission (50% HP)

• Cartering: Lethal impact zone—clear the area.
• Shield + Interrupt Race: Break the barrier and interrupt  TOTAL DESTRUCTION!!!

Heroic Exclusive: Lightning Dodging (Intermission)

• During TOTAL DESTRUCTION!!!, avoid lethal lightning while breaking the boss’s shield.

Phase 3: Mobile Mayhem

• Boss becomes mobile, retaining Giga Bombs and introducing:
  • Bigger Badder Bomb Blast: Upgraded frontal/AoE combo around the tank.
  • Tick-Tock Canisters: Ground targeted soaks requiring at least 1 player.

Ego Check (Tankbuster Mechanic)

• Damage Profile:
  • Deals 4 consecutive physical damage strikes.
  • The unmitigated damage from all hits is combined into a stacking Damage over time (DoT) effect.
• Strategy:
  • Tanks must use defensive cooldowns to mitigate the initial strikes.
  • Failure to reduce incoming damage significantly increases the DoT's potency.

Liberation of Undermine Loot Item Levels

Loot item level scales based on raid difficulty and boss progression. Here's the full breakdown:

New Mounts from Liberation of Undermine

The Liberation of Undermine raid and the new Gallagio Loyalty Rewards Club Renown  rewards introduce exclusive goblin engineered mounts, blending chaotic style and propaganda flair. Here’s how to claim them:

Prototype A.S.M.R. (Automatic Sonic Machine Resonator)

Description:
A deafening hovercraft commissioned by Gallywix to "persuade" dissenters with overwhelming bass and sheer auditory aggression. Subtlety was never an option.
Source: Drops from Chrome King Gallywix (all difficulties).

Keys to the Big G

Description:
A gaudy, gold plated steam cruiser that screams luxury—and questionable structural integrity. Perfect for flaunting wealth (or surviving the trip to the mailbox).
Source: Exclusive drop from Chrome King Gallywix (Mythic difficulty).

Furious Flarendo

Description:
A flame spewing goblin cycle built for speed and spectacle. Riding it is less about transportation and more about leaving rivals in a cloud of smoke and envy.
Source: Unlocked at Renown 20 with Gallagio’s Underground Syndicate.

Final Thoughts

The Liberation of Undermine in World of Warcraft: The War Within stands as one of the most dynamic and visually spectacular raids in recent memory. Blending goblin engineering chaos, elemental destruction,this raid offers a thrilling—and punishing—test for even the most hardened raiders.

Whether you're dodging propaganda spewing machinery, weathering volatile elemental assaults, or resisting creeping corruption, every encounter demands precision, adaptability, and a well prepared group.

Pro Tip: Set your Hearthstone at the Incontinental Hotel for quick returns, have your addons up to date, and make sure your WeakAuras are locked and loaded!