Age of Ascension: Forging an Immortal Realm from Nothing

The world was pitch black, swallowed by a deathly silence.
From all sides of the territory, monsters swarmed forth. It was like an endless, raging tide, hell-bent on drowning the fledgling domain.
Right now, his 2,000-square-meter territory was like a lone raft on a stormy ocean, ready to be smashed to splinters by the next wave.
And then it happened.
Pppfffffffffrrrrrrrtttt—! 
Poot~~~! 
Pppppppppppppbbbbbbbt—!
A chorus of long, drawn-out, rasping fart sounds erupted across the land.
From the four corners of the territory, the newly erected [Fart Towers]—one or two at each corner—simultaneously "opened fire." Their stone-carved "posteriors" aimed squarely at the charging horde and unleashed a massive, billowing cloud of foul, greenish gas.
This was an attack steeped in a... mysterious aroma. The gaseous wall spread out, forming a stinky barrier between the territory and the monsters.
"ROAR!"
"GRRRAAWWWL!"
"ROAR ROAR ROAR!"
The monsters, their eyes burning with savage fury, snarled and beat their four thick arms against the ground, cratering the earth and kicking up clouds of dust, making them look even more terrifying.
They didn't hesitate. They charged headlong into the green mist.
The very next second...
The front-line monsters skidded to an abrupt halt. Their faces contorted into masks of pure, unadulterated agony. The once-ferocious pack instantly "lost its steam," becoming utterly deflated.
One by one, they started convulsing, collapsing to the ground, blood trickling from their noses and mouths. As the leading monsters fell, those behind tripped over them, tumbling headfirst into the lethal flatulence.

In mere moments, vast swathes of the monster army were twitching on the ground. Their fearsome, powerful bodies seemed to have turned to paper—weak, limp, and wishing for death.
BOOM! 
BOOOOM—! 
BOOM—!
The first line of defense had an... unexpectedly effective result!
Wu Chi watched the contribution of this round of [Fart Tower] attacks, his face twitching uncontrollably.
These new towers were, of course, the result of several [Arrow Towers] he had acquired recently undergoing their "metamorphosis." He didn't know if it was some kind of twisted fate, but now each corner of his territory was "blessed" with one or two of these stink-bomb launchers.
And he had upgraded them all to Level 4!
A Level 4 [Fart Tower] saw a massive increase in both its range and its... potency. The only downside was that the "aroma" was now a bit more... concentrated.
Beside him, Lin Daiyu had her nose firmly covered. Qin Keqing also wore a strange expression, pinching her nose shut. Seeing the look on Wu Chi's face, they seemed torn between laughing and maintaining decorum.
(Technically, the [Fart Tower]'s attack shouldn't affect the territory's residents, but the sheer visceral idea of it was just too strong for them to ignore.)
"Second wave, ATTACK!" Wu Chi couldn't take it anymore. He couldn't wait another second and gave the order immediately.
The next moment...
The Level 4 [Fireblast Tower] shuddered. Its floating crystal erupted with a dazzling yellow light, coalescing into a fireball larger than a man! Flames roared within, compressing and gathering power until—
KABOOOOOM—!
The massive fireball shot out, trailing a blazing tail, and slammed directly into the heart of the monster horde!
A small mushroom cloud bloomed on the battlefield. Instantly, over a hundred monsters were vaporized. Another hundred were sent flying by the blast, their dying screams filling the air.
At the same time, the Level 4 [Machine Gun Tower] unleashed hell. The violent staccato of machine gun fire erupted like thunderous applause. It was like a giant Vulcan cannon, spewing a torrent of bullets amidst endless muzzle flashes. The projectiles ripped through the stinky haze, tearing the disoriented monsters to shreds...
The Level 4 [Crossbow Tower] fired with pinpoint accuracy. Its massive, armor-piercing bolts easily punched through the monsters' thick hides, sometimes skewering two or even three in a single shot...
Atop the Level 4 [Frost Tower], its crystal glowed with an azure blue light, releasing a river of ice that instantly flash-froze a large patch of ground. The monsters, already suffering from the fart gas, now faced a glacial hell—those not frozen solid shivered uncontrollably in utter agony...
These veteran defense towers performed reliably as ever.
The new towers also proved their worth splendidly.
In the southeastern corner, two brand-new defensive structures joined the fray.
One elemental tower, its prismatic crystal etched with a lightning symbol, burst forth with a brilliant white radiance!
CRACKLE—ZZZAP!
A chain lightning bolt leaped forth, crackling through the air and reducing a dozen monsters to charred husks in the blink of an eye!
Another elemental tower, its crystal marked with a bubble symbol, emitted a soft blue glow. It spewed out a dozen or so large water bubbles, which gently but firmly enveloped one monster after another, trapping them securely inside. The creatures struggled and roared within their aqueous prisons, but it was utterly futile...
... 
[Lightning Tower] 
Type: Defense Tower.
Level: 4 (0/1500)
Function: Chain Lightning (Level 4)
Attack Range: 500 meters.
Ammunition: 50/50. ❀ Nоvеlігht ❀ (Don’t copy, read here)
Description: A pretty damaging lightning spell. Also, it's an AoE (Area of Effect).
...
[Bubble Tower] 
Type: Defense Tower.
Level: 4 (0/1500)
Function: Bubble Trap (Level 4)
Attack Range: 200 meters.
Ammunition: 100/100.
Description: Water nurtures all things. Water contains all things. Literally. ...