Kael’s lungs burned. His body, Riven’s body, instinctively flattened against the crumbling alloy wall. The stench of stale oil and rusted metal filled his nostrils, sharper than any scent from his former life. Below, three figures moved with unnerving purpose. They weren't Rust-Stalkers. Their gear gleamed. Crisp white and metallic silver, unmarred by the Substratum's grime. Over-City. He knew the designation. He knew their faces, too. Or rather, the polished visors of their helmets. Enforcers. His game knowledge screamed: *Enforcer Patrol – Standard Sub-Sector Sweep. High threat. Avoid direct confrontation unless tactical advantage guaranteed.* His hands, skeletal but strong, tightened on the shard of alloy he’d used against the Scrap-Hounds. He was still holding it. A pathetic weapon against these armored figures. Their weapons, slung across their backs, were pulse rifles. Standard issue. Lethal. They paused near the mangled Scrap-Hound carcasses. One Enforcer, taller than the others, knelt. A gloved hand, impossibly clean, touched a wound on one of the beasts. "Recent kill," a voice crackled through a comms unit attached to his helmet. Flat. Devoid of emotion. "Rust-Stalker activity confirmed. High aggression." "Any sign of the primary target?" another voice asked. Lower, more resonant. "Negative. Sweep continues." Riven's heart hammered against his ribs. *Primary target?* That wasn't in the game lore for standard patrols. This wasn't a standard patrol. This was something else. His internal database, Kael’s memory, felt a jolt. *Substratum Protocol*. He pulled back, deeper into the shadow of a collapsed strut. His vision, sharpened by the Rust-Stalker’s genetic adaptations, picked out details even in the gloom. Their boots left faint, clean prints in the grit. Their movements were precise, efficient. Not a wasted step. They were moving towards a specific point. He recognized the architecture. A maintenance tunnel, rarely used, leading to Sector Gamma. Gamma was bad. Even in the simulation, Gamma was where things went to die. Or be processed. He needed to follow. He needed to know what 'primary target' meant. What ‘Substratum Protocol’ entailed. Every instinct warred. The animalistic urge to flee, to find food, to find safety. The human need to understand, to survive intelligently. The human won. For now. He moved silently, a whisper of a shadow flitting between skeletal structures and corroded machinery. His bare feet were toughened leather, immune to the scattered glass and razor-sharp shrapnel. His emaciated form was a strength here, allowing him to squeeze through gaps, climb sheer surfaces with surprising ease. He was a ghost, a specter of the Substratum. The Enforcers were fast, but not silent. Their armor clinked softly. Their comms continued a low chatter of readings and sector coordinates. He kept a broken-down ventilation shaft between them and himself, using it as cover. The air here was thicker, laced with more toxins. He felt the familiar burn in his lungs, the faint metallic taste in his mouth. He knew what this section was. The Purge Gate. A relic from the early days of the Collapse. Designed to vent toxic gases, it was now just another crumbling ruin. But the Enforcers were heading directly for it. He saw them activate a scanner. A thin blue beam swept across the ground, mapping thermal signatures. He froze, pressed against the rough, cold metal of the shaft. He controlled his breathing, slowing his heart rate to an almost imperceptible flutter. Rust-Stalkers, according to the game, had a natural resistance to thermal detection due to their unique metabolism. A small mercy. The beam passed over him. The Enforcers continued their march. He waited, counting ten slow breaths, before resuming his pursuit. The Purge Gate loomed ahead, a colossal, rusted maw in the wall of the Substratum. It wasn't a gate anymore. It was a gaping hole leading into deeper, darker levels. He heard voices, closer now. They had stopped just inside the Purge Gate. "No, not this one. Biomass readings too low. Too much decay." Riven peered around a support beam. The Enforcers stood over something. A body. Not a Rust-Stalker. This one was different. A gaunt, twisted corpse, its skin flayed, its limbs mangled. A 'Screamer', his mind supplied. Another product of the Substratum. Less intelligent than a Rust-Stalker, more feral, driven solely by pain and hunger. "The Protocol specifies optimal specimens," the lead Enforcer stated, his voice still flat. "Condition must be viable for... re-integration." Re-integration. The words hit Kael like a physical blow. What did that mean? They weren't just patrolling. They were *collecting*. And they had standards. Another Enforcer jabbed at the Screamer's corpse with a boot. "The specimens further down will be better. Less exposure to surface toxins." They were talking about living beings as if they were raw materials. As if *he* was raw material. A shiver, not from cold, ran down Riven's spine. He needed to get closer. He needed more information. The Purge Gate was a maze of collapsed ducts and broken conduits. Perfect for stalking. He slipped inside, the air growing heavier, the scent of ozone and decay more potent. He could hear the rhythmic *clack-whirr* of their gear, the low thrum of their comms. They moved deeper into the labyrinthine darkness. He followed, a predator tracking its prey, even though he was the weaker one. His senses were alive. The faint whisper of displaced air, the tremor of their steps through the floor, the distinct metallic tang of their advanced technology. Then, a new sound. A low, guttural moan. The Enforcers had stopped again. They were gathered around another figure. This one was alive. A Rust-Stalker. Older, perhaps, than Riven. Emaciated, curled into a fetal position, shivering. Its skin was a patchwork of scars and lesions, its eyes wide with terror. "Specimen identified," the lead Enforcer announced. "Viable. Condition 7. Optimal." The Rust-Stalker tried to scramble away, whimpering, a sound like a starving dog. It lunged, not at the Enforcers, but at a broken pipe, trying to squeeze through. One Enforcer raised a hand. A beam of azure light lanced out, striking the Rust-Stalker in the leg. The creature screamed, a raw, piercing sound that echoed through the Purge Gate. It collapsed, convulsing. "Non-lethal incapacitation," the Enforcer said, devoid of regret. "Damage minimal. We need it intact." They produced a flexible net, fine but impossibly strong. They moved with practiced ease, throwing it over the struggling Rust-Stalker. The net crackled with faint energy, subduing the creature further. It still struggled, its limbs twitching, its eyes darting wildly. Riven felt a primal rage clawing at him. Kael, the corporate drone, would have felt disgust, maybe pity. Riven felt something darker, something akin to a violated boundary. This was *his* world. These were *his* kind. They were being hunted. Harvested. He recognized the net. "Restraint Net (Type-B)." Game knowledge again. Impossible to break without specialized tools or immense strength. The Rust-Stalker was trapped. They dragged the netted creature towards a section of the wall. There, a panel hissed open, revealing an impossibly clean, illuminated alcove. Inside, a single metallic pod hummed softly. A cryo-stasis unit. "Prepare for loading," the lead Enforcer commanded. The second Enforcer activated a console on his wrist. "Establishing environmental parameters. Atmospheric purge initiated. Containment fields active." They shoved the struggling Rust-Stalker into the pod. The creature let out a choked gasp as the door hissed shut. A soft *click* reverberated through the space. The humming intensified, then stabilized. "One more for the Substratum Protocol," the third Enforcer remarked. This one's voice held a faint, chilling satisfaction. The lead Enforcer turned, scanning the area. "Let's proceed. We have more sectors to clear before the collection window closes." He knew what this was. Kael knew it. A purge. A harvest. They weren't cleaning up the Substratum. They were farming it. Harvesting its inhabitants. For what? "Re-integration"? The word mocked him. Riven pressed himself further into the shadows, his muscles coiled, his breathing ragged. He was not just playing a game anymore. He was one of the pawns. One of the harvest. The Enforcers moved on, deeper into the Purge Gate, towards levels Kael had only glimpsed in loading screens. Levels designated 'Restricted Access – Extreme Hazard'. He had to follow. He had to understand. If he wanted to survive, he couldn't just avoid them. He had to know their purpose. He had to learn the rules of this new, terrifying game. His stomach rumbled violently, a hollow ache that gnawed at his resolve. He ignored it. He ignored the burning in his lungs, the ache in his joints. His mind was alight with a cold, desperate focus. He slipped out of his hiding spot, closer to the empty cryo-stasis unit. He touched its polished surface. It was warm. He could still smell the faint, animal scent of the trapped Rust-Stalker. Then, his eyes caught something on the grimy floor near where the Rust-Stalker had been captured. A small, dull glint. He knelt. It was a small, crudely fashioned carving, made from a piece of bone. A miniature, distorted depiction of a Rust-Stalker, with wide, terrified eyes. A charm, perhaps. A relic. The Rust-Stalker had dropped it when it was stunned. He picked it up. The bone was smooth from countless touches. He felt a pang. A connection. This wasn't just a generic NPC from a simulation. This was a being with fears, with hopes, with trinkets. This was *life*. He clenched the charm in his fist. The Enforcers were far ahead now, their comms chatter fading. He had a choice. Retreat, find food, regroup. Or continue the pursuit, knowing it would lead him into greater danger, deeper into the maw of the Substratum Protocol. He looked at the empty pod. He looked at the direction the Enforcers had taken. He ran. Silent. Feral. Deeper into the darkness. Towards the unknown. Towards the source of the Protocol. Every fiber of his being screamed caution, but Kael’s will, forged in the sterile quiet of his cubicle, now ignited in the toxic depths. He would find out. He *had* to find out. He heard a low, metallic *thunk* ahead. The sound of heavy machinery. And then, a new, horrifying sound. A high-pitched, almost mechanical shriek that echoed back from the depths of the Purge Gate. A sound he didn’t recognize, even from the most obscure lore files of the game. He stopped, heart pounding, straining his ears against the oppressive silence that followed. What was down there? What had the Protocol unearthed? The silence stretched, thick and suffocating. Then, a faint *snap* from above, and a shower of pebbles rained down on him from a structural fissure. A loose support. A warning. Or something else. He pressed himself against the nearest wall, his breath held. He was not alone. The sound wasn't human. It wasn't a Screamer. It wasn't a Scrap-Hound. It was something... new. Something awakened. His game knowledge had failed him. This wasn't in the database. This was real. And it was coming from below. From where the Enforcers had gone. From where he was going.

Chapter 3: The Purge Gate