The Breached Keep Diablo III Guide
Last update: 11 May 2016
Locate Tyrael in the Bastion's Keep Stronghold and talk to him to start a new mission.
Find the Keep Depths Level 2
Find the jeweler and approach a passageway located next to him which leads to Keep Depths Level 1. Deal with a small group of Demon Troopers and then use this passageway.
Start exploring the Keep Depths Level 1. This is an enormous location and you must be extremely careful, because large groups of monsters may occupy even smaller rooms of the depths. As for the details on the monsters, you may encounter Soul Rippers (they use their very long tongues and they can jump once they grab you), Icy Quillbacks (they shoot spikes), plenty of skeletons (including the ones with shields and bows) and the creatures from the previous quests.
Your main objective is to locate a passageway Keep Depths Level 2, however before you use it make sure to locate and activate a waypoint on level 1.
Find the Breach in the Keep Depths
This is another large location and it's occupied by several new types of monsters, including Demonic Tremors (they can shield themselves to prevent you from injuring them), Swift Skull Cleavers (they're not only fast, but they also have a lot of health points and their large swords inflict major injuries), Demon Raiders and Fallen Maniacs (they may explode if they manage to get closer to you).
Continue exploring the second level until you've found the Breach. Witness another vision of Azmodan to find out that you've arrived too late.
Find the Bastion's Keep Larder
Continue moving forward. There's an entrance to Keep Depths Level 3 near the Breach and you must use it.
The third level isn't as big as the previous ones, however it contains a waypoint. Keep exploring the level until you've located an entrance to the Larder.
Kill Ghom in the Larder
Head forward after entering the Larder and it shouldn't take long for you to find a chamber occupied by Ghom. His primary attack is to create a poisonous cloud and you should stay away from it if you can. The boss can also spit Gluttons and it's best to avoid them or to kill them as soon as possible. Also, it's important to know that Ghom isn't as slow as it might seem and that he has a lot of health points.
Return to the Bastion's Keep Stronghold
Cast a town portal spell to return to the Bastion's Keep Stronghold. Doing this will end the quest, however you will also be presented with another vision of Azmodan.