Stomp on 6 superheated Crawler Mines and then defeat the Iron Juggernaut in Siege of Orgrimmar on Normal difficulty or higher.
Crawler Mines become superheated when the laser is kited over them in the boss’ second phase. Have the raid stack tightly during this phase to keep the bombs close together so you can hit multiple ones at a time. Additionally, it is critical to make sure that everyone is standing next to the bomb cluster when the laser is about to go out, because it doesn't last a long time and the player might not have enough time to make to the mines before the cutter picks a new target otherwise.
Make sure the person responsible for mine stomping during this phase prioritises getting the Superheated Crawler mines.
The boss’ berserk timer allows for three of these phases before he enrages, so a raid needs to explode at least two Superheated mines per phase, and you'll need to make sure DPS doesn’t kill him before you’ve gotten all six.