The cavern trembled as the monstrous silhouette stepped forward, molten metal cracking and sizzling across its colossal frame. Its eyes burned like twin infernos, casting ominous red light that danced off the shattered walls.
Tony's armor whirred with energy, sensors scrambling to analyze the new threat.
"Leviathan's back online… and pissed," Tony muttered, voice grim.
Pepper steadied herself, the glow from her gauntlets pulsing with raw, untamed energy. Sparks of light cascaded around her like a halo fighting to contain the storm within.
Steve tightened his grip on his shield, muscles coiled like a spring ready to strike.
Obsidian snarled, retreating momentarily but never losing his sinister smile. "You think you can face this beast? You're only prolonging the inevitable."
The Leviathan roared, a sound that shook the earth, and lunged forward, smashing a massive fist into the ground, sending shockwaves rippling like a tidal wave.
Tony leapt into action, jets igniting as he soared to intercept the attack.
His repulsors flared, blasting arcs of brilliant blue energy that met the Leviathan's molten fists with a shower of sparks and molten fragments.
Pepper unleashed a blast of radiant power, the force pushing back the molten titan, carving glowing runes into the cavern walls as her energy collided with the Leviathan's heat.
Natasha and Steve flanked the beast, striking from shadows and angles, their coordinated attacks forcing it to stagger.
But the Leviathan's fury was unrelenting — it swung a massive, molten arm in a sweeping arc, narrowly missing Tony and sending Natasha skidding across the floor.
The battle raged like a storm — light and dark, fire and steel, hope and despair clashing in an epic struggle for survival.
Tony's visor flickered with alerts. "This thing's adapting. We need a new plan — fast."