Jimi leaps from a drawbridge across a vast canyon in a burst of speed and chakra. The slower abominations tumble into the chasm; however, the faster persistent mutants keep pace and climb the drawbridge's bracing system. Jim electrifies his hand with lightning jutsu before grabbing one of the bridge girders. Electricity surges through the metal dropping dozens of them like flies in a bug zapper. He sprints through the ruins of Fort Firestorm, avoiding the mutant soldiers lumbering around.

Jim rushes through the abandoned APCs (Armored Personnel Carriers) and Humvees obstructing the roads. The bodies stuck on the stalagmites roar and twitch; the mutants within the armored vehicles grab at him through the windows as he dashes through the flooded outpost. Uneasiness washes over Jim as the terrain becomes more tedious to traverse.

Blood conceals the potential hazards beneath the water's crimson surface. Silhouettes of all shapes and sizes appear in the shallow regions; he jumps atop a boulder preventing the mutants from pulling him underwater. Debris inhibits the abominations from emerging; nevertheless, a decaying corpse breaks free. It leaps from the water at Jim as he pulls a small metal rod from his inventory.

The metal rod extends, impaling the mutant's fleshy ribcage. The abomination screeches and claws at the air as Jim holds it in place. He grabs the Bo staff with both hands sending several volts through the mutant's body. Jim shakes the metal staff until the rabid mutant resembles a screeching smoldering red blur moving up and down at a blistering rate. Jim increases the wattage setting the abomination ablaze; its residual skin and muscle tissue rip and tear, then fall apart from the legs upward. The mutant's burning bones and internal organs splash, then fizzle in the bloody water until all but its flaming head remains. Jim flings the skull upward before batting it away into the canyon.

The abominations arise from the crimson water; Jim is out of their reach but surrounded. He deflects the mutants capable of lunging through the air at him or jabs down at any of them climbing too close. The boulder sways, yet Jim maintains his balance; he walks as the boulder rolls. Bones crunch and grind against concrete; the rolling stone crushes all in its path.

Jim's momentum progresses to a brisk walk; he continues flattening the mutants like a gory toothpaste squeezer causing them to vomit their rotting entrails. The sudden increase in pressure expels the built-up gas and bodily fluids within the walking corpses resulting in crude flatulence-like sounds. Jim almost loses balance due to his immature sense of humor.

The boulder's velocity intensifies; Jim accelerates from brisk walking to light jogging. His two-hand underarm spin hastens as he swats away the mutants lunging at him. Dead ahead, the runaway boulder is on a collision course with a reinforced wall. He shoves his staff down a mutant's gullet, poll-vaulting over the blockade. The boulder impacts the wall's surface, squishing another abomination like an undead insect.

Jim lands a three-point pose holding his Bo staff behind him. He stands, gives the weapon a quick spin before it retracts, then seals it away in his inventory. The ground is vibrating—a constant pulse strengthening every second. The low rumble becomes a violent pounding which Jim identifies as giant footsteps rushing towards him. He dodges the behemoth trying to devour him whole. The mutant berserker crashes into the wall below Jim; he crouches on the wall's surface, staring in disbelief at the hulking monstrosity.

"Sweet mother-Marry of Josephine!? What the goddamned titty-fuck is that thing!? Jesus Christ!"

The bipedal behemoth's upper torso comprises multiple human and animal corpses partway absorbed into its flesh. Blood leaks from the grotesque abomination's eyes and mouths, resulting in a constant jabbering/gurgling noise. Its head resembles a hideous amalgamation of body parts (both animal and human) with two long fleshy tentacle-like tongues coming out of what appears to be its mouth. Jim evades the appendages, trying to impale him.

The berserker rushes after Jim like a runaway train, smashing and knocking around everything in its path. He keeps his distance, ascertaining the quickest way to immobilize the beast while assessing its weaknesses. He turns around mid-step; his hands fly through a sequence of seals. An upheaval in the ground trips the berserker; a stalagmite explodes from the road impaling the behemoth's forehead.

Jim sustains his counterattack until the beast's tongue ensnares his ankle, yanking him in the air. He straightens his hand, cuts through the appendage using his Synergistic Sabre, then dodges another tentacle-like extremity. A horde of bloody skeletons amasses atop the walls spilling into the base.

Jim growls in anger, "I don't have time for this!" he draws his rifle, then makes a mad dash for the stone towers. The mutant berserker pulls its head from the stalagmite and takes off like a screaming bull after him. Jim channels small quantities of chakra to his feet and then runs up the skyscraper's surface. He empties the stripper clip firing at the berserker's joints to immobilize or slow it down. The berserker flinches a few times before a round disables its leg. The behemoth changes course without delay; it grabs handfuls of the mutants, climbing the walls with massive arms before cannibalizing them. The enormous biomass the beast ingests regenerates its injuries while further mutating the behemoth.

A dense skeletal shell forms around the berserker's torso, arms, and legs; horns grow on its head, giving the beast a more demonic appearance. Its fingers and feet morph into razor-sharp claws.

"Oh, that's bullshit!" Jim rages. Despite the berserker's massive size, it scales the skyscraper after him at breakneck speed. The armored behemoth slams its powerful arms down at him. He uses the Body Replacement Technique with the stalagmite that impales the berserker's hands. The explosive tags on the stalagmite detonate, throwing the beast from the tall structure like a flaming ragdoll. Jim replaces his rifle's stripper clip while distancing himself as far as possible from the hulking monstrosity. He dashes through the thickening horde using his rifle stock as a weapon if necessary; however, some of the mutants spring back up as fast as he drops them.

Jim shoulders his rifle, resorting to earth jutsu to redirect or obstruct the abominations in his path. He throws a half-eaten carcass off an anti-tank gun, then readies the twin turrets.

The berserker explodes from the burning rubble storming after Jim, but a projectile impacts the behemoth's shoulder. The beast stumbles as its arm jerks back; Jim fires the second turret stopping the berserker dead in its tracks. A mass of explosions envelops the armored behemoth.

"Eat my greasy shit, you ugly mother fucker!" Jim rages, unleashing a semi-auto barrage of chakra conducting shells with each pull of the triggers. He ceases fire, then crushes the half-eaten carcass's skull with his boot before it can bite his leg. He kicks the twitching mutant away; the berserker lunges from the smoke, then destroys one of the turrets forcing him to dodge.

The beast's skeletal armor is now nothing more than tatters of cartilage and bone fragments. Jim draws his rifle, knowing the unarmored behemoth is vulnerable. It tries grabbing him; he runs up the berserker's arm, chambers a bullet, then fires, taking a chunk off its head. The beast swings its other arm; Jim b-twists, reloads, and fires. The round ricochets in the behemoth's skull, causing it to lose equilibrium.

Jim lands shouldering his rifle, then draws a kunai. The berserker grabs at him yet again. He ducks, spins, drives the kunai into its exposed ribs and shoves it deeper with his palm. Jim extends his index and pinky fingers holding the rest down with his thumb.

"Lightning Release: Synergistic Sabre!" the kunai becomes a blade of pure lightning piercing the mutant berserker's abdomen. Jim grabs the kunai handle, then yanks the saber forward, spilling the behemoth's intestines. He tosses the galvanic blade, then aerial-flips over the berserker's swinging arm; the kunai's handle clings to Jim's boot. The saber slices the berserker's jaw sideways below its eyes, resulting in an unsuccessful decapitation.

Jim lands then backhand springs away; the behemoth lunges forward, trying to crush him. The beast's tongue whips through the air at Jim. He electrifies his hand with lightning jutsu and catches the extremity centimeters from his face. Electricity surges through the behemoth's body. It tries ripping off its tongue but Jim lassos the appendage around its head and hands. He darts behind the berserker, then kicks its spine, snapping it like a twig. Jim channels chakra to his hand; concentric Rings of Power levitate above his palm.

"How many… How many did you mutilate to become what you are!?" Jim twitches his fingers, propelling the Surging Centrifuge toward the anti-tank gun. The berserker's eyes bulge as the barrel forces its way inside. Jim tangles conductive wire strings to the berserker's arms and around the anti-tank gun's trigger and locking mechanism, "I'm about to blow my load all over your insides."

The mutant berserker stares at Jim, uttering a noise almost like a "what—the!?"

"No-homo," Jim fires the anti-tank gun popping the behemoth's skull like a cork. The recoil pulls the barrel out; the chakra rings push it in. The wire strings binding the berserker's arms pull the trigger; the weapon discharges, destroying the rest of the beast's head. The anti-tank gun continues to fire, resetting each round like an improvised bump stock configuration.

Jim is again sprinting for his life, unable to observe the resulting spectacle of his handiwork. A sizable horde stampedes after him as he scrambles to a Humvee. Jim throws open the door, diving into the vehicle; an emaciated hand squeezes his ankle. He kicks a bloody skeleton away, then slams the door. The horde surrounds the Humvee; the mutants shake and pound the armored vehicle trying to break in. The glass is cracking; it won't hold much longer. Jim cannot find the keys despite searching every inch of the interior.

He removes the cover below the vehicle's steering column, then connects the ignition wire to the battery wire, which gets the radio going. A mutant shoves its arm through the front window forcing Jim to duck. He connects the starter and battery wires hotwiring the Humvee; Jim jams a kunai in the ignition, revs the engine, then shifts into first gear. He dumps the clutch with the revs near red, flooring the accelerator.

The tires screech as the vehicle rockets through the horde. The mutant flails its arm, trying to grab Jim; he keeps his distance while shifting through the gears. The Humvee accelerates; visibility is scarce, but he steers toward the central tower's general direction. The mutant reaches through the steering wheel; Jim loses control over the vehicle. The Humvee rolls; he prevents himself from sustaining severe injury by clinging to the seat with his chakra.

The vehicle lodges into the tower's reinforced window upside down; Jim crawls from the wreckage with minor cuts, bruising, and slight dizziness, then shuffles into the building using the wall for support. He uses a nearby switch to close the security gates before the mutants break through the glass.

Now able to stand without support, Jim steadies himself, then observes his surroundings. The moons illuminate the lobby in a red hue. White noise emanates from a TV sitting on a column shelf between two desks with decrepit propaganda posters along the walls. Broken glass litters the floor; a sizeable steel fan spins above, but it does little to alleviate the smell of iron on the bloody tiles.

Besides the mutants pounding on the barricades, the reception area is somewhat calm; regardless, Jim is sure the mutant responsible for flipping the Humvee is near. He stalks by the column approaching a dark hall. Past the reception desk, the mutant's footsteps squelch on the floor. Jim leans against a wall halting a few steps away from a junction.