The third pet battle dungeon is coming in Patch 8.1. To get started, make sure you have earnt the achievement All Growns Up! which requires you to physically raise a pet to level 25. Levelling stones and pet battling works but not purchasing or trading max level pets.
A new quest can be picked up from Radek Fuselock, who is located near the pet battle trainers in Dazar’alor, or Tizzy Gearjolt who is just outside of Dana Pull’s shop in Hook Point in Boralus. Thankfully, you won’t need to complete the earlier pet battle dungeons so with the addition of this third one, you’ll be able to complete them in any order.
Make your way to Gnomeregan and locate Micro Zoox, located just outside the Gnomeregan dungeon portal. Horde players will have a fun time getting inside the first time. =/
Stages of Gnomeregan
Stage 1: Automated Defenses
Prototype Annoy-O-Tron (Mechanical)
Stage 2: Out of Control Elementals
Living Sludge (Elemental)
Living Napalm (Elemental)
Living Permafrost (Elemental)
Stage 3: Pull the Correct Levers
Control Console defeated
Stage 4: Bypass the Mine Field
Use the Shredder to make your way to the end of the hallway
Stage 5: Resilient Critters
Leper Rat (Undead)
Stage 6: You Dirty Rat
Bloated Leper Rat (Undead)
Stage 7: Gnomeregan Defense Force, Activate!
Gnomeregan Guard Mechanostrider (Mechanical)
Gnomeregan Guard Tiger (Mechanical)
Gnomeregan Guard Wolf (Mechanical)
Stage 8: Shadowy Figure
Confront the Shadowy Figure – make sure you’re standing fairly close to activate the dialogue.
Stage 9: Thermaplugg’s Latest Invention
Pulverizer Bot Mk 6001 (Mechanical)
The first time you complete the scenario, you’ll receive an Ultimate Battle-Training Stone and access to Manapoof’s free teleport from your capital city.
Before you can try the Challenge Mode version, you will need at least 15 max-level pets to open up the account wide weekly quest from Micro Zoox.
Completing the challenge awards an achievement and Mini Spider Tank battle pet. On subsequent weeks, you’ll be able to earn a Pristine Gizmo – the new currency to purchase the new pets from Micro Zoox.
It will take 7 weeks to purchase all the pets (or 6 for non-engineers).