•  Overview - Players attempt to turn the massive Hellfire Cannons in the Citadel's courtyard against the mighty gate of the Citadel, while fending off Siegemaster Mar'tak and her militarized force. Throughout the encounter, waves of enemies rush at the players, periodically accompanied by huge siege weapons that seek to destroy the Cannons and the players defending them. Destroying these siege weapons allows players to salvage Felfire Munitions, which may be brought to the Hellfire Cannon, allowing it to continuously fire Hellfire Rounds at the Reinforced Hellfire Door. Once players successfully breach the Reinforced Hellfire Door, Siegemaster Mar'tak's forces retreat into the Citadel. |
| | •  Damage Dealers - Quickly defeat Gorebound Felcasters after they use  Metamorphosis to become a Gorebound Terror. Defeat Fel-Infused Siege Weapons to keep the Hellfire Cannons alive. |
| | •  Healers -  Felfire Volley inflicts high raid-wide damage after Metamorphosis. |
| | •  Tanks - Be ready to grab the attention of any Hellfire Reinforcements.  Slam stacks increase Physical damage taken, so be wary when tanking multiple enemies and a Hulking Berserker. |
•  Hellfire Cannon
Upon starting the encounter, players commandeer both Hellfire Cannons. Siegemaster Mar'tak's forces continually pour forth from Hellfire Citadel to prevent players from capitalizing on possession of these cannons. Based on available Felfire Munition reserves, the Hellfire Cannon will continuously fire at the Reinforced Hellfire Door. |
| | • Felfire Munitions - Felfire-Imbued Siege Vehicles carry Felfire Munitions into battle. Upon death, the Felfire Munitions drop to the ground, allowing a player to pick it up. The Felfire Munitions despawn if not picked up within 10 minutes. Upon being picked up, a player gains Haste, increasing movement speed by 0% for 9 seconds. While being carried, the Felfire Munitions inflicts 9 Fire damage every second. |
| • Siegemaster Mar'tak |
| • Hellfire Reinforcements |
| | • Iron Dragoon - This hardened melee enemy wields a sharpened polearm and is at the beck and call of Siegemaster Mar'tak. |
| | • Hulking Berserker |
| | • Gorebound Felcaster |
| | | | • Gorebound Terror |
| | • Contracted Engineer |
| | • [NO DIFFICULTY] Grand Corruptor U'rogg |
| | • [NO DIFFICULTY] Grute |
| • Felfire-Imbued Siege Vehicles |
| | • Felfire Crusher |
| | • Felfire Flamebelcher |
| | • Felfire Artillery |
| | • [NO DIFFICULTY] Felfire Demolisher |
| | • [NO DIFFICULTY] Felfire Transporter |
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