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The crystal longsword in Peter's hand was a masterpiece of specialized warfare. Born from the same nuclear radiation laboratory that transformed Flint Marko, the weapon was the result of Peter refining and compressing isotopes using his Mechanical Limit Breaker (Level A). While the Anti-Morlun suit was his ultimate shield, the Radiation Sword was the ultimate spear—a weapon specifically tuned to the biological frequency of the Morlun Family.
Karn stared at the blade with a mixture of suspicion and instinctual dread. For the first time in his immortal life, he was staring at a man who hadn't just brought a weapon, but a solution to the problem of his existence.
The Neutralization of Norman
Before Karn could act, Norman Osborn attempted one final, desperate intervention.
"Karn! I'll cover you! We take this interloper down together!" Norman roared, brandishing a green, venomous dagger—his last remaining scrap of ordnance.
Peter didn't even turn his head. He simply flicked his wrist behind him. In response, the ground beneath Norman's feet liquefied. Swirling quicksand, controlled by the silent and loyal Flint Marko, surged upward. It swallowed the Green Goblin in seconds, piling into a massive, pressurized shackle that submerged Norman up to his neck.
The original Green Goblin, a man who once terrorized New York, was now nothing more than a head sticking out of a mound of dirt, forced to watch the endgame.
The Clash of Power and Technology
Karn, sensing Peter's "mortal" life aura, convinced himself that Peter was a puppet of his technology. If I can just touch him, Karn thought, his soul will be mine.
Karn ignited his remaining life energy, shrouding himself in a violent white mist. He blurred through the air, appearing before Peter like a ghost. His half-meter-long energy claws lashed out at Peter's abdomen, aiming to shred both metal and flesh.
But Peter's suit was guided by Deep Blue and the Super Intelligence Brain. Every frame of Karn's movement was analyzed and predicted. Peter didn't dodge; he activated the hilt of a prototype plasma blade integrated into his gauntlet.
Clang!
A dazzling light erupted as energy claws met a beam of plasma. Even Karn, a multiversal traveler, was stunned. He had never seen technology capable of reacting with this level of precision. The two became a blur of afterimages, exchanging dozens of blows in seconds.
To the immobilized Norman Osborn, the scene was horrifying. He realized that this Peter Parker hadn't just defeated him with strength; he had outclassed him in wisdom.
The Final Calculation
In a final surge of speed, their primary weapons—claws and plasma—collided and neutralized each other. Peter seized the opening. He reversed his grip on the Radiation Sword and drove it downward.
Karn laughed, catching Peter's wrists in his empty palms. "Peter Parker! I will remember the taste of your soul!"
Karn activated his life-drain ability, his hands glowing with a parasitic light. But the laughter quickly turned into a blood-curdling scream.
"Ah—! My hands! Why can't I extract your energy?!"
Karn's palms began to scorch and blacken. Across Peter's armored wrists, tiny, fly-like Alchemy Arrays glowed red. These were the perfected versions of the transmutation circles Peter had deconstructed earlier—designed to perfectly isolate and repel the Morlun Family's touch.
"My Anti-Morlun suit is quite effective, isn't it?" Peter's voice was ice-cold. "I should promote it to other Spider-Men in the Multiverse. They'd be very interested."
Peter's arm thrusters ignited.
$$F_{Peter} (100 \text{ tons}) > F_{Karn} ( \approx 30 \text{ tons in weakened state})$$
With a strength reaching 100 tons, Peter's physical advantage was absolute. He precisely increased the pressure, collapsing Karn's defense. The Radiation Sword, humming with a deadly isotope frequency, slowly pierced into Karn's chest.
Extinction
The moment the crystal blade touched Karn's heart, a strange, low-frequency hum filled the underground base. Deadly nuclear radiation erupted within Karn's body, causing a chain reaction.
Starting from his chest, Karn's body began to turn into a stiff, gray, statue-like substance. The "petrification" spread through his limbs and up to his throat. His eyes, once glowing with a predator's fire, dulled into lifeless pebbles.
When Peter withdrew the sword, the stillness was absolute. In a final, silent whisper of physics, Karn's entire body weathered into fine dust. The particles scattered into the air, leaving no trace of the Inheritor behind.
The hunt was over.
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