In this blog post, we’ll break down the boss fights you’ll face throughout the map, with a special focus on defeating the Infernal King, the ultimate enemy. We’ll explore his different phases, his attacks, and the best tactics to take him down, as well as the rewards you can expect after his defeat.

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1. The Infernal King: Background and Lore

Before diving into the boss fight itself, let’s take a closer look at who the Infernal King is, and why he is such a formidable foe.

The Infernal King was once a leader of the Flameborne, the ancient civilization that built the Citadelle Des Morts. However, his desire for power led him to become corrupted by the Infernal Core, a powerful artifact at the heart of the citadel. Consumed by the core’s destructive energy, the Infernal King transformed into a monstrous being, embodying fire and destruction in its purest form.

Though he was defeated long ago by the Fire Protector, his essence remains trapped within the citadel. However, with the Fire Protector now reawakening and the undead swarming the citadel once again, the Infernal King is beginning to regain his strength, threatening to break free from his prison.

The Infernal King’s corruption has resulted in the rise of zombies and other hellish creatures, making him not just a final boss but the source of all the chaos you encounter in the game. His defeat is key to restoring balance to the citadel—and to completing the Fire Protector Easter Egg.

2. Preparing for the Infernal King Fight

Defeating the Infernal King requires more than just unlocking the Fire Protector and having a good weapon. Preparation is crucial, especially when dealing with the chaotic environment that comes with high-round fights and powerful enemies.

Key Preparations Before the Fight:

• Upgrade Your Weapons: The Infernal King has multiple phases, and in each, he’ll bring new and more devastating attacks. It’s critical that your weapons are upgraded to deal substantial damage quickly. Focus on weapons with high damage output, like the Hellfire Shotgun or Phantom Reaper. Energy-based weapons, such as the Laser Gatling Gun, are also effective, particularly in dealing sustained damage.

• Gather Perks: Before triggering the boss fight, make sure you’ve equipped all necessary perks. Juggernog and Speed Cola are non-negotiable, as the Infernal King’s attacks are brutal. You’ll also want Quick Revive in case you get downed, and Elemental Protection to help mitigate fire-based damage. Don’t forget to pick up a Max Ammo if possible, as this will give you the necessary resources for the fight.

• Pack-A-Punch: If you haven’t already, make sure your weapons are Pack-A-Punched. This will significantly increase their damage output. Having Flame Ammo or Molten Rounds will synergize well with your abilities and give you extra fire damage, which is particularly effective against the Infernal King.

• Special Ammo and Power-Ups: Make use of Firestorm or Molten Power Ammo if available, as these will allow you to keep dealing massive damage to the Infernal King. Power-ups like Instakill or Double Points can make the fight easier if they drop, but don't rely on them—focus on surviving first.

3. Phases of the Infernal King Boss Fight

The Infernal King fight is a multi-phase battle, and understanding each phase’s mechanics is key to success. His attacks evolve with each phase, and he summons different types of minions and environmental hazards.

Phase 1: The Resurrected King

• Appearance: In the first phase, the Infernal King appears in his corrupted, human-like form. He is armed with flame-infused gauntlets and a sword made of molten lava.
• Attacks:
  • Lava Slam: The Infernal King will slam his molten sword into the ground, sending out waves of fire that deal significant damage.
  • Fireball Barrage: He will launch fireballs across the arena that can set you on fire. Avoid these at all costs.
  • Summon Undead: Periodically, he’ll summon waves of zombies to attack you while you focus on him.
• Strategy:
  • Focus on dodging his fireballs and avoiding the Lava Slam.
  • Use Infernal Aegis when he does the Lava Slam, as it will absorb the attack and allow you to deal damage.
  • Stay mobile and keep distance from the Infernal King when he’s summoning zombies. Use your Burning Aura to clear the minions quickly.
  • Target his weak points—look for cracks in his armor or glowing points on his body that signal where you can deal the most damage.

Phase 2: The Infernal Beast

• Appearance: After taking a certain amount of damage, the Infernal King’s body will transform into a more monstrous, demonic version of himself. His molten sword becomes a massive flame blade, and his body grows larger, with magma pouring from his wounds.
• Attacks:
  • Magma Eruption: The Infernal Beast will leap into the air and crash down, causing the ground to erupt in molten lava that damages anyone nearby.
  • Infernal Roar: He lets out a powerful roar that stuns you briefly and causes a fire hazard in the area.
  • Summon Fire Elementals: Along with the zombies, the Infernal King will now summon Fire Elementals, which are tougher and deal continuous fire damage.
• Strategy:
  • Avoid staying in one spot for too long. The Magma Eruption attack will hit multiple areas, so you’ll need to keep moving.
  • Use Firestorm Summon during this phase to deal with the Fire Elementals and zombie minions that will swarm you.
  • Keep an eye on the Infernal Beast’s movements to anticipate when the Infernal Roar will occur. Use Infernal Aegis to block it, and quickly move to another spot afterward.
  • Focus on his fire-infused weak points, which will now glow with intensity, to maximize damage.

Phase 3: The Infernal God

• Appearance: The final phase of the Infernal King sees him transform into a fiery, god-like entity. His molten body radiates intense heat, and his attacks now involve large-scale firestorms that engulf the arena.
• Attacks:
  • Firestorm Barrage: The Infernal God will cause firestorms to fall from the sky in a random pattern, which can deal massive area damage.
  • Magma Shield: The Infernal God will create a shield of molten lava that reflects damage. You’ll need to use the Firestorm Summon or Infernal Aegis to bypass this shield.
  • Hellfire Wave: A powerful wave of fire will rush toward you, dealing heavy damage if you get caught.
• Strategy:
  • This phase is all about timing and careful movement. Use Infernal Aegis when the Hellfire Wave is incoming to protect yourself from its deadly effects.
  • Time your Firestorm Summon carefully to coincide with the Magma Shield and to deal heavy damage to the Infernal God while his shield is down.
  • Keep moving to avoid the Firestorm Barrage, and use the Burning Aura to take down any minions that the Infernal God summons.
  • Take advantage of any Instakill power-ups if they drop—this can help you clear the remaining zombies and focus on the Infernal God.

4. Rewards for Defeating the Infernal King

After an intense battle, defeating the Infernal King will reward you with more than just satisfaction—there are significant rewards, including:

• Fire Protector's Ultimate Power: Upon defeating the Infernal King, the Fire Protector's abilities will be permanently upgraded, allowing you to summon Firestorms more frequently and with greater potency.
• Unlockable Secret Ending: Defeating the Infernal King will unlock a hidden cutscene that reveals more about the Fire Protector’s origins, as well as the true nature of the Infernal Core.
• Weapon Upgrades: You’ll be able to pick up powerful weapons or artifacts from the Infernal King, including unique fire-themed weapons that deal extra damage to undead enemies.
• Max XP Boost: For completing this challenging fight, you’ll gain a substantial experience boost, helping you level up faster in the game.

Conclusion

Defeating the Infernal King in Black Ops 6 Zombies: Citadelle Des Morts is no small feat. It requires strategic preparation, a deep understanding of his attack patterns, and an effective use of the Fire Protector’s abilities. But with the right weapons, perks, and teamwork, you can emerge victorious and complete one of the most challenging and rewarding boss fights in the game.It should be said that U4GM not only provides a comprehensive Black Ops 6 game guide, but also has a variety of COD BO6 Gift CP for you to choose from.