A blizzard of thermal bolts ripped through the main medical bay, superheating the air. Oyuun didn’t flinch. Her training kicked in, a lifetime spent anticipating trajectories and structural weaknesses. “To the ventilation shaft! Bayan, cover me!” Bayan, already adjusting his trajectory protocols, pivoted, his arm cannon spitting a volley of disorienting sonic flares. The grafted troopers hesitated, their synchronized movements momentarily disrupted. That was all Oyuun needed. With a terrifying agility, she launched herself at a wall panel, her modified surgical tools transforming into grappling hooks. They bit into the alloy with a shriek of tortured metal, and she pulled, ripping the vent cover free. “After you, Bayan! Don’t want you to scuff that pristine academic tunic on the way down!” Oyuun chirped, already halfway inside the narrow, dark shaft. Bayan, cursing under his breath about her reckless disregard for structural integrity, followed, dropping into the duct just as another plasma round seared the air where he’d been standing. The metallic tang of ozone and stale air filled the cramped space. They crawled, the alien clicks and hisses of Varga’s command echoing faintly from below, a visceral reminder of the hive’s reach. The narrow passage forced Oyuun’s thoughts back to the Outer Fringes, years ago, where she’d first observed the nascent biomechanical rot. Not the full, aggressive assimilation, but the insidious, almost elegant creep of metallic filaments over organic matter. The way the native fauna, once vibrant, had begun to twitch with an unnatural synchronicity, their eyes dimming, their movements less their own and more… an orchestra. She remembered the thrill of discovery, the cold certainty that something vast and ancient was stirring. A delightful puzzle, even then. Suddenly, the floor of the ventilation shaft ahead exploded inward. A plasma cannon, an upgraded model usually mounted on heavy assault drones, had been brought to bear. Bayan, who had been a hair’s breadth in front of Oyuun, reacted with an instinct that defied his meticulous nature. He twisted, throwing himself backward, shielding her with his body. The searing, liquid impact tore through his shoulder guard, vaporizing the durasteel and biting deep into the flesh beneath. A guttural cry ripped from his throat, quickly suppressed. “Bayan!” Oyuun’s cheerful tone vanished, replaced by a sharp, clinical focus. She dragged him deeper into the shaft, pulling him into a slightly wider junction. His face was pale, a thin sheen of sweat on his brow. The plasma had cauterized the wound, but the damage was extensive, a jagged, smoking crater where his shoulder had been. His immaculate tunic was ruined, fused to the wound with molten threads. “Told you not to scuff it,” she muttered, already tearing open her field kit. Her hands moved with a blur of practiced motion, a hypodermic needle flashing as she plunged it into his neck. “Painkillers. Don’t move. Much.” She began to apply a bio-gel, a synthetic tissue sealant that hissed as it connected with the burned skin. The confined space, the raw smell of his injury, the rapid pulse thrumming beneath her fingers as she worked – it all compressed the moment. Bayan watched her, his breath shuddering in ragged gasps. Her hair, usually a wild halo, brushed his cheek as she leaned in, her brow furrowed in concentration. The raw adrenaline of the escape, the sudden, sharp pain, and now her intense, unwavering proximity, all coalesced into something potent, something dangerous. His gaze lingered on the curve of her jaw, the fierce intelligence in her eyes, the way her lips, usually twisted into a sardonic smile, were now pressed into a tight, determined line. “You… you saved me,” he rasped, the words thick with the painkillers taking effect. Oyuun looked up, her gaze locking with his. For a fraction of a second, the scientific detachment in her eyes flickered, replaced by an intensity that matched his own. A silent, charged understanding passed between them, a recognition of something beyond their rivalry, beyond the chaos. It was a shared current, a forbidden hum in the air. Then, she gave a short, dismissive sniff. “Nonsense. You shielded me. I’m just tidying up your mess. Your vital signs are dipping. We need to move, and you’re a liability if you bleed out.” The moment was broken, slammed back into the harsh reality of their situation. But the hum lingered. They moved deeper into the labyrinthine network, Oyuun half-dragging Bayan. They found a relatively stable service tunnel that branched off, a perfect blind spot in the Spire’s sensor grid. “Right,” Oyuun said, tapping into a terminal access panel with a specialized multi-tool. “Let’s see what Varga’s really up to. He’s been too quiet since his little hive-mind performance.” Her fingers danced across the data-interface, a stream of complex coding scrolling across the tiny display. Bayan, despite his injury, leaned in, offering corrections and suggestions, their combined intellect a terrifying force. The Spire’s mainframe, a notoriously complex system, began to unravel under their synchronized assault. Data packets, encrypted schedules, restricted access logs – all flowed into their makeshift terminal. “There!” Oyuun’s voice was sharp. “Conclave finale details… updated. Not tomorrow. Tonight. The Sovereign Core integration has been accelerated.” Bayan stiffened against the alloy wall, the lingering painkillers doing little to dull the shock. “Tonight? That’s impossible. The preparations alone… he’s skipping entire diagnostic phases. He wants the Core integrated before anyone can react.” “He knows we’re onto him,” Oyuun said, her smile returning, sharper now, less cheerful and more predatory. “He’s running scared. Good. Means he’s vulnerable.” She pulled up another file, her brow furrowed. “Wait… this energy signature. It’s coming from… below us. Deep under the Spire. Not on any schematic.” A guttural roar from the main shaft, followed by a concussive blast, shook their shaft. The metal shrieked around them. Oyuun barely had time to register Bayan shoving her further into the junction before the entire section of the shaft buckled. The world tilted violently. Metal groaned, twisted, and then gave way beneath them. They plummeted, free-falling through darkness and debris, landing with a bone-jarring impact on a grimy, forgotten floor. Dust motes danced in the single, weak emergency light. Around them, ancient cables snaked like petrified vines, connecting to vast, humming machinery that throbbed with an unnerving, organic rhythm. A low, distorted moan echoed through the subterranean space. Oyuun pushed herself up, her vision blurring for a moment, then focusing on the source of the sound. There, at the heart of the machinery, fused into the very architecture, veins of pulsing light connecting him to the thrumming conduits, was a human figure. His eyes were wide, vacant, yet radiating an immense, agonizing power. It was Bayan’s missing mentor, the previous Conclave winner, General Kormak, horribly transformed, acting as a living battery.

Catacomb Diagnostics