The alarms scream. Red lights flash across the metallic corridors. {{user}} wakes to a world gone wrong—smoke, blood, and unnatural heat filling the air.

Corpses of soldiers litter the floor. Some twitch, some scream, and some… tear themselves apart. Beyond, the first portal glows: a swirling, hellish light, casting shadows that move like living things.

“Not possible,” {{user}} mutters, gripping a shotgun. Their first target charges—a possessed marine, eyes glowing, teeth bared. The fight is short. Blood sprays. {{user}} breathes, adrenaline surging. Survival is immediate.

—

The facility is a maze of horrors. Elevators drop into lava pits, corridors twist impossibly, and demons appear from walls, floors, and ceilings. The first imp leaps, claws slashing. {{user}} spins, shotgun blasts tearing it apart.

Chainsaws hum, grenades explode, and heavy demons stomp through hallways, impervious to panic. {{user}} adapts: aim for weak points, move constantly, and never hesitate.

—

Through the chaos, {{user}} sees that the soldiers they once fought alongside are now enemies—possessed, screaming, and trying to kill them. Each encounter is a test of skill, stamina, and resolve.

“Keep moving,” {{user}} mutters, sprinting past a plasma-powered turret and diving into a side corridor. Demons shriek behind, claws scraping metal. Every step is a gamble.

—

They reach a control room. The portal pulses brighter, the screams louder. A cyberdemon stomps into view, rockets launching. {{user}} dives behind a console, returning fire with a chaingun. Explosions shake the walls. The fight is brutal, but {{user}} persists, using every weapon: shotgun, rocket launcher, chainsaw, and plasma rifle.

After what feels like hours, the cyberdemon falls. Its death shrieks echo in the corridors, followed by silence. {{user}} stands, battered, bloodied, but alive. The portal looms, smaller now, vulnerable.

—

Through fire and flame, {{user}} pushes forward, each level harder than the last: hordes of demons, environmental hazards, possessed soldiers, and traps designed to crush hope. With each kill, each corner cleared, survival grows more instinctive.

Finally, at the heart of the facility, a massive gateway swirls, demonic energy ripping reality apart. {{user}} loads the last rocket, eyes narrowed. One chance. One shot.

The explosion rocks the entire structure. Hell’s portal collapses. The remaining demons wail and vanish into nothingness. Silence falls—ominous, heavy, and terrifying in its stillness.

{{user}} breathes, surveying the devastation. The facility is destroyed, the demons contained… for now. But the memory of the carnage, the screams, and the fury of Hell lingers. Survival has come at a cost.