Chapter 2: Potential Energy
Elias stood motionless in the flickering light of Room 412, the adrenaline slowly beginning to metabolize in his bloodstream. The crushed skull of the Lesser Scavenger leaked a viscous, dark fluid onto the linoleum, a grim testament to the new reality.
He took a deep breath, forcing his heart rate to decelerate. Panic was a waste of caloric energy. He needed data.
Focusing his mind, he willed the blue azure screen to return. It materialized instantly, projecting a minimalist interface over his vision.
[Status Window: Elias] Class: Kinetic Scholar (Unique) Level: 2 Health: 100/100 Mana: 20/20 Attributes:
Strength: 10
Agility: 12
Constitution: 11
Intelligence: 18 (Class Modifier Applied)
Wisdom: 15
Skills:
[Force Redirection (Passive) - Lv. 1]: The host naturally perceives the kinetic vectors of incoming physical attacks. By applying a counter-force at the optimal fulcrum point, the host can redirect up to 30% of an enemy's kinetic energy against them.
Elias swiped the screen away. The numbers were abstract, but the implications of the skill were monumental. It was the physical manifestation of classical mechanics integrated into his neurological pathways. He didn't just understand physics anymore; he could weaponize it.
A shrill scream from the stairwell violently snapped his attention back to the present. The hospital was under siege.
During his 10,000 hours of clinical practice across various wards, Elias had mapped out the entire facility in his head. Station 4 was primarily post-op recovery. Two floors down was the Surgery department—a goldmine for sharp instruments—and directly below him on the third floor was Internal Medicine. Right now, he was isolated on the fourth floor, armed only with a dented IV pole.
He needed a better weapon. An IV pole was unwieldy, its center of mass poorly distributed for swinging.
He stripped the bedsheets from Herr Müller's ruined bed, tearing them into thick strips. He bound them tightly around his forearms and shins—makeshift armor against bites and scratches. Next, he moved to the supply closet attached to the room. His eyes scanned the shelves, moving past the bandages and saline bags, landing on a portable, size-E oxygen cylinder.
It was heavy, made of thick aluminum alloy, and completely full.
Elias hefted the cylinder. It weighed roughly 4 kilograms. If he strapped it to the end of his shortened IV pole using the medical tape and fabric strips, he wouldn't just have a club; he would have a devastating impact weapon.
His mind automatically calculated the physics. By moving the center of mass to the extreme end of a 1.2-meter pole, he was creating a massive mechanical advantage. The torque τ generated by a swing could be defined by the cross product of the lever arm vector and the force vector:
τ=r×F
Furthermore, the kinetic energy Ek transferred upon impact would be dictated by the velocity of his swing and the mass of the oxygen tank:
Ek=21mv2
By maximizing the radius of his swing, the velocity at the end of the pole would be exponentially higher than the speed of his hands. It was the exact principle of a medieval mace, constructed from modern medical equipment.
He spent three minutes securing the tank to the pole with overlapping layers of heavy-duty adhesive medical tape and torn sheets, creating a rigid, unyielding bond. He gave it an experimental swing. The heavy whoosh of air displacement was deeply satisfying. If a Scavenger jumped at him now, he wouldn't just redirect it; he would crush it.
Elias stepped out into the main hallway. The overhead emergency lights bathed the corridor in a harsh, crimson glow. The silence was heavier here, broken only by the distant, rhythmic thumping from the emergency stairwell.
Something is coming up.
He gripped his makeshift mace, feeling the cool metal of the pole against his palms. He kept his back to the wall, sliding toward the nurses' station at the center of the ward. His priority was the keycard access terminal. If the System integration had knocked out the main servers, the electronic doors to the medication lockup and the reinforced triage rooms might default to lockdown mode.
As he reached the circular desk, the heavy fire doors of the stairwell groaned open.
Three figures spilled into the hallway. Two were human—a young female nurse Elias recognized from the Pediatrics rotation, and a male doctor in a torn white coat. They were stumbling, gasping for air, their faces pale masks of pure terror.
Behind them, moving with terrifying fluidity, was the third figure.
It was a larger variant of the creature he had killed. Its skin was pitch black, and instead of just a slavering maw, its forelimbs ended in elongated, scythe-like bone protrusions.
[Hunter Scavenger - Level 4]
"Help!" the nurse shrieked, tripping over her own feet and collapsing onto the linoleum. The doctor didn't stop; he scrambled past her, his eyes wide with blind panic, sprinting toward the elevators that no longer worked.
The Hunter Scavenger ignored the fleeing doctor. It loomed over the fallen nurse, raising one of its bone-scythes for a lethal strike.
Elias didn't think about heroism. He thought about vectors. He thought about the distance—ten meters. He thought about the creature's momentum, currently zero as it prepared to strike downward.
He lunged forward, his nursing shoes finding perfect traction on the clean floor. He closed the distance in seconds, drawing the heavy oxygen-tank mace back over his shoulder. The Hunter Scavenger heard his approach and pivoted, swinging its bone-scythe in a wide, horizontal arc aimed at Elias's ribs.
Time seemed to dilate. Elias's [Force Redirection] skill flared to life in his mind. He saw the glowing red vector of the creature's attack.
Instead of jumping back, Elias stepped into the guard. He didn't try to block the scythe; he brought the heavy steel shaft of his weapon down sharply onto the creature's elbow joint—the fulcrum of its swing. The calculated strike didn't just halt the attack; it forced the kinetic energy of the monster's own swing to rebound into its shoulder, dislocating the joint with a loud pop.
The monster shrieked, off-balance.
Elias planted his lead foot, rotating his hips to generate maximum centrifugal force, and swung the heavy oxygen cylinder in a brutal, sweeping arc.
F=ma
The heavy aluminum tank slammed into the side of the Hunter Scavenger's skull with the force of a speeding motorcycle. The impact echoed down the corridor like a gunshot. The creature's head snapped sideways, its neck breaking instantly, and its body crumpled to the floor, sliding three meters down the hall from the sheer inertia of the blow.
[Target Defeated. Experience Gained.] [Level Up: 2 -> 3]
Elias stood over the twitching corpse, his breathing steady, the heavy weapon resting easily in his hands. He looked down at the terrified nurse.
"Get up," Elias said, his voice calm, projecting the steady authority he used when managing difficult patients. "The shift isn't over."