Apocalypse Architect: A Tower Defense LitRPG

Chapter 67: Encountering the Spiked Dune Lord Again

Without hesitation, Jax charged toward the breach where the Sandworm wave had first erupted.

“Move! Get to the valley exit!” he barked over the comms.

Silas, Gareth, and Kaleb didn’t need telling twice. They scrambled toward the designated fallback point, boots splashing through the mud.

As Jax reached his position, the hum of the upgraded defenses vibrated in his chest. The range of the Tier 2 Sentry Towers was staggering. Before, the defensive perimeter had dead zones the towers couldn’t reach; now, the heavy ballistae were turning the wasteland into a kill zone long before the beasts could touch the walls.

Thwack. Thwack. Thwack.

The attack speed had doubled. The stopping power had doubled. The Sandworms weren’t just dying; they were being obliterated in droves, their chitinous shells shattering under the relentless barrage.

Jax surveyed the field of carnage, the ground slick with green ichor and rain. A dark, predatory satisfaction swelled in his chest.

“Ha! Tier 2 is a beast,” he muttered, wiping rain from his eyes. “If the Sentry Towers are this good, what kind of monster is the Tier 2 Howitzer going to be? I need to test it. I need those upgrade resources.”

A straggler screeched, lunging at him from the gloom.

Jax didn’t flinch. His Bio-Score had hit eighty-one—he was physically superior to these oversized maggots in every metric.

He swung his reinforced sledgehammer.

CRACK.

The weapon, enhanced by the system, smashed through the Sandworm’s skull like it was wet cardboard. It was almost too easy.

For the next few minutes, it was a rhythmic slaughter. Swing, crunch, splatter. The rain washed the gore from his armor as fast as it accumulated. Dozens of Sandworms fell to his hammer, their bodies piling up in the mud. soon, nothing within fifty yards was left breathing.

Jax lowered his hammer, chest heaving slightly. He waited.

The Black Rain hissed against the ground. Thunder rumbled overhead.

But the one thing he was waiting for didn’t happen.

[ … ]

Silence. No System notification.

Jax’s eyes narrowed. “No reward prompt? That means the wave isn’t cleared.”

A cold realization settled in his gut. They retreated.

He stared into the pitch-black throat of the valley. Without moonlight, the canyon was a gaping maw of darkness, silent and oppressive.

He keyed his radio, jogging over to the observation platform. “Annie, status? Any targets left in your sector?”

Annie, perched high on the platform, was already scanning the perimeter. “Negative, Jax! It’s all clear up here. Not a single worm moving.”

Jax sprinted to the valley exit where the rest of the team was catching their breath. “Silas! Did any slip past you?”

Silas blinked, wiping slime from his visor. “No, Boss. We thought the wave just… stopped. Did they not show up?”

“Damn it.” Jax swore, kicking a loose rock. “I must have killed the vanguard, and the rest got spooked.”

Kaleb, leaning on his shovel, suddenly looked up. “Boss… remember what you said when you got here? About the intelligence of these things? If they ran…”

“Then the mission isn’t over,” Jax finished grimly. ” The objective was ‘Total Annihilation.’ If I don’t wipe them out, I don’t get the Howitzer upgrade. And my Builder Level might drop.”

He looked at the dark valley entrance. “I have to go in. I have to hunt them down.”

The three men froze.

“Are you insane?” Gareth blurted out, his voice cracking. “That valley is a death trap! What if we run into a swarm of Rodent-Maw Creepers? Or worse?”

Kaleb swallowed hard, his knuckles white on the hilt of his machete. “We… we can’t let you go alone, Boss. Strength in numbers, right?”

Gareth whipped around to stare at Kaleb, betrayal written all over his face. He looked at Silas, hoping for support, but the older man was already nodding grimly.

“He’s right,” Silas grunted. “We stick together.”

Gareth looked between them, trapped. He gritted his teeth, his face pale. “Fine! Fine. But if I die, I’m haunting all of you.”

Jax nodded, appreciating the gesture, even if Gareth looked like he was about to vomit. “Good. The Sentry Towers will cover the base. Grab Torches.”

Five minutes later, the four of them were trekking into the gloom.

The resin-soaked Torches burned fiercely, defying the downpour, casting long, dancing shadows against the canyon walls. The deeper they went, the heavier the air felt. The smell of ozone and rot was suffocating.

They found a few wounded Sandworms along the path—stragglers pierced by arrows but not dead. The team descended on them in a frenzy of violence, harvesting the Cores and discarding the carcasses quickly.

Ten minutes in, they reached the sharp bend in the valley.

Jax stopped. This was the point of no return.

Kaleb gripped his long knife so hard his hand shook. “The bend…” he whispered.

The memory of their last venture here hung over them like a shroud. Beyond this point lay the unknown.

“Listen to me,” Jax said, his voice low and steady. “My mission is the priority. I need those kills. But I’m not sending you to your deaths. If we see Rodent-Maw Creepers, I’ll deploy my hologram clone to draw aggro. You three run. Don’t look back. Understood?”

“Understood,” they chorused, though their voices lacked conviction.

They rounded the corner.

The terrain changed immediately. The ground was littered with strange, towering formations—Hive Spires. They looked like jagged stone stalagmites erupting from the earth, densely packed and ominous.

Silas halted, his eyes wide. He remembered Kaleb’s stories of the “Vanguard” mission.

Gareth made a whimpering noise. “I… I think I need to piss.”

“Hold it,” Jax snapped. “Don’t you dare be dead weight now.”

Gareth pinched his own thigh, trying to use pain to focus his mind, but the terror was primal.

“Careful,” Jax whispered, gesturing to the spires. “These aren’t just rocks. They’re incubators. Likely for the Spiked Dune Lord’s spawn. If we break one, we ring the dinner bell. Watch your step.”

They moved forward, stepping gingerly between the alien structures.

Scritch… Scritch…

A low, rhythmic friction sound echoed from the darkness ahead.

Everyone froze.

Gareth stumbled back two steps, hyperventilating. “Did… did you hear that? Something’s coming.”

Kaleb gulped, his throat clicking audibly. “It sounds like… Rodent-Maw Creepers rubbing their carapaces together.”

“Stay calm,” Jax hissed, though his own pulse spiked.

He inched forward, raising his torch. The firelight cut through the rain, illuminating a shape about thirty yards ahead.

“Target confirmed,” Jax whispered. “Sandworm.”

It was a large one, but it was limping. Two arrows protruded from its flank, slowing it down. It was trying to retreat deeper into the hive.

But it wasn’t alone.

Behind the wounded Sandworm, the ground began to ripple. The wet sand churned, and a massive pool of viscous, dark mucus bubbled up from below.

Jax’s blood ran cold. He recognized that slime. He had seen it when he shadowed the Vanguard team days ago.

“Oh, shit,” Jax breathed.

“What? What is it?” Silas asked, panic rising.

“Spiked Dune Lord,” Jax roared, abandoning stealth. “Run! It’s the Tier 4 Boss! Move!”

Gareth didn’t need to be told twice. He let out a high-pitched shriek and bolted back the way they came, sprinting faster than he had ever moved in his life. Silas was right on his heels.

“Cowards,” Jax cursed, but he held his ground.

He glanced aside. Kaleb was still there—but only because he was paralyzed with fear. His legs were locked.

“Kaleb! Move!”

“I… I can’t…” Kaleb stammered, eyes fixed on the horror emerging from the earth.

In the distance, the mucus ring expanded, and a nightmare erupted from the sludge. It was a colossal, segmented worm covered in black, obsidian-like spikes. Its maw unhinged, revealing rows of serrated teeth that spiraled down its gullet.

It roared—a sound like grinding metal—and lunged at the wounded Sandworm.

Jax’s eyes widened. “No! That’s my kill!”

If the Boss ate the Sandworm, the system might not count it as Jax’s kill. The mission would fail.

He hefted his hammer to throw it, but the distance was too great for the heavy blunt weapon. He needed speed and aerodynamics.

“Kaleb! The knife!”

“H-huh?”

“Give me the damn knife!”

Jax snatched the long blade from Kaleb’s trembling grip. He spun once, channeling every ounce of his strength, and hurled the weapon like a javelin.

The blade cut through the rain.

The Spiked Dune Lord’s mouth opened wide, descending on the Sandworm.

THWACK.

The knife struck true, piercing the Sandworm’s skull an instant before the Boss’s jaws snapped shut around it.

CRUNCH.

The Spiked Dune Lord swallowed the Sandworm whole, bones snapping like dry twigs.

But the notification had already triggered.

[System Alert: Mission Objective Complete.] [Target Annihilated. Tier 2 Howitzer Turret Upgrade Unlocked.]

“Got it!” Jax grinned wildly.

He grabbed Kaleb by the collar of his vest. “Now we run!”

He hauled the frozen man around and sprinted for the exit, adrenaline flooding his system. They ran until their lungs burned, splashing through puddles, expecting the roar of the Boss behind them at any second.

Ten minutes later, they collapsed near the valley exit, gasping for air.

Jax looked back into the dark void of the canyon. Nothing. The monster hadn’t followed.

They were alive. And he had his upgrade.