The first of the group to face the incoming zombie goblin horde was Shadowheart.
With a defensive grimace, she raised her shield, anticipating the imminent attack.
As a pair of gnarled zombie claws swung towards her, she managed to parry the blow, deflecting it away with a glancing impact. Taking advantage of this opening, she moved forward with purpose, her shield held at the ready.
With a powerful swing, she drove the metal portion of her shield into the front of the zombie's rotten face, sending a shower of thick, wet chunks of flesh flying backwards in the process.
A gutteral growl rumbled from the zombie, sounding surprisingly close to actual words, if not for the jaw hanging loosely.
"GRUUUUGUUU!"
Whatever word it attempted died before becoming a gutteral roar and the zombie once more rushed towards Shadowheart.
Thankfully, she had her mace raised in a position to deliver a downward swing, and she brought it down with a decisive crack that echoed through the air.
The force of the blow shattered the zombie's skull, leaving an extra thick and viscous mess in its wake.
Two more zombies were flanking her from either side of her and Shadowheart could only defend herself from one while the others claws were nearing her back.
However.
TWICK!
An arrow, seemingly originating from the very depths of the cavern's darkness, found its mark, piercing the zombie's temple and emerging on the opposite side, effectively halting the creature's charge just millimeters away from Shadowheart's back.
She snapped her fingers and activated the cantrip Sacred Flame, and the zombie scratching at her shield burst into golden radiant flames, the undead creature letting out a howl of pain as its body was reduced to fine ash.
Her head turned towards the shadows, where a pair of deep, blood-red eyes could be discerned, and the rapid sound of a bow being drawn and released filled the air.
"Thanks, Astarion!" she replied, making her gratitude clear and concise, before returning to the fray.
Halsin was in the middle of tearing the head off a living goblin before the Arch-druid turned around and saw Shadowheart being slowly but surely surrounded by the undead goblins.
Halsin roared, a sound that echoed through the battlefield, his massive frame rushing forward like a whirlwind.
He sent both living and dead goblins tumbling if they were fortunate enough to avoid being crushed outright, while those who dared to step forward to face him were met with the crushing force of a massive bears weight.
Halsin found himself suddenly plunged right into the heart of the ever-growing horde of undead, his teeth and claws snapping into action with terrifying speed.
As a zombie lunged towards Shadowheart's weapon arm, ready to deliver a fatal bite, Halsin reacted instantly, his strength and ferocity overwhelming the creature.
With a swift, almost casual motion, he tore the zombie apart, ripping the creature limb from limb with astonishing ease.
Priestess Gut let out a low, guttural snarl that seemed to vibrate through the very air before she vanished into a swirling vortex of darkness that seemed to actively try to swallow her whole, leaving behind an utterly empty void where she stood just moments ago.
Halsin and Shadowheart scanned their surroundings carefully, but their search proved fruitless.
Eventually, they shifted their attention back to the immediate danger before them when a foul claw suddenly swiped at the Arch-druid's flank, causing the immense bear to let out a deafening roar of pain and fury.
In a separate location, Karlach and Lae'zel were positioned side-by-side, engaging in a fierce battle against both living and undead enemies. Their powerful, wide-ranging attacks were proving extremely effective in keeping the small group from being overwhelmed and swarmed, as they swiftly dealt with the small remaining bridge element.
Two particularly skilled goblin warriors closed in on Lae'zel, their movements incredibly precise as they executed synchronized sweeps.
These sweeps were swift and powerful, leaving most of her companions with little to no chance of dodging them. However, Lae'zel was not simply any fighter. No, she was a Githyanki warrior, a being whose entire life had been dedicated to honing her body to perfection.
This training had prepared her perfectly for the kind of situation they were now facing.
With a precise set of movements Lae'zel leaped into the air between the blades and twisted her body, narrowly avoiding the deadly blades which audibly cut through the air around her body before she landed with elegant but predatory grace.
She reared up, her body rigid, and delivered a powerful kick with all her might. The kick connected with the one on the left, sending it flying through the air and into the abyss below. However, before it fully disappeared into the depths, it slammed into the rough, solid wall of the gaping hole in the cavern
The force of the blow knocked him completely unconscious, and he tumbled soundlessly down into the darkness below, never to be seen again.
Before the one on the right even had a chance to retaliate with any form of violence, his flesh was immediately seared as a pair of red, scorching hands wrapped around him like a vice, and lifted him off the ground.
With all his might, the goblin kicked and flailed, but the swift ascent he'd been on had caused his blade to clatter against the bridge, producing a loud, resounding clang against the metal and leaving him helplessly scrambling to escape.
Overwhelmed by sheer terror, the goblin could only let out a terrified shriek as the pair of hands gently guided him to the edge of the abyss, leaving him there without a word and then, letting go.
"Aaaaaaaahhhhhgggghhh!" The goblin cried out, the last thing it saw as it fell helplessly was Karlach and Lae'zel peering over the edge with ruthless expressions.
Karlach and Lae'zel both heard the sickening sound of flesh being pierced, and their eyes immediately turned to where they heard it coming from.
They witnessed a goblin, its weapon raised but also with an arrow visibly protruding from its neck and out of its mouth.
The arrow, lodged deep inside the goblin's body, seemed to have been pushed all the way through by the force of the impact, and it caused a small, short-lived fountain of blood to spurt from the arrow's exit point before instantly stopping.
Nearby Wyll was facing multiple undead goblins and had received multiple wounds from their relentless attacks but despite this the Blade of Frontiers held firm, his blade gleaming in the faint torch light and his off-hand crackling with eldritch power.
"Come, face the blade and feel it's sting!"
He aimed directly at the zombie's abdomen, unleashing an intense point-blank blast.
The crackling energy not only pierced through the zombie's torso with devastating force, but also sent it flying backwards, knocking it into a few of the other undead and sending them flying through the air like bowling pins.
With lightning speed, Wyll charged into the guard of another attacking zombie.
The zombie's rotten arms fought against its own strength, snapping against its own weight as they collided with Wyll's guard.
Simultaneously, with a swift and fluid movement, he plunged the point of his rapier into the eye socket of the zombie.
Despite his efforts though, more and more undead surrounded him and as they moved closer he let out a depressed sigh as he channeled the power of his patron.
The smell of sulfur wafted out from around his body and his eyes snapped open, however one of them was different, in one eye his whites darkened and his pupils took on an infernal coloration as his devil patron took temporary control.
"Ugh, undead," Wyll exclaimed, his voice surprisingly feminine, "really, Wyll, you always seem to take me to the most... interesting places."
With a swift, freehand motion, Wyll's devil patron, Mizora, unleashed a powerful wave of infernal fire. The flames erupted, heading directly toward the surrounding zombies, and they danced across the undead goblin ranks with a ferocious hunger.
In a remarkably short amount of time, those who had been transformed into zombies were reduced to smoldering heaps, and the influence exerted by Mizora, the devilish sorceress, began to diminish significantly.
Her distinctive, cheerful giggle, which had previously been so prominent, gradually faded away, and she retreated back into the abyss from whence she originated.
Wyll fell to his knees as a sense of exhaustion filled not just his body but the very soul itself and before losing consciousness he looked up towards the bridge where William was fighting against Minthara in a duel that left even the fabled Blade of Frontiers in awe.
Steel screamed as Widower collided with Minthara's mace time and time again, the bridge beneath them shuddering and convulsing as if it were under unimaginable torture.
William barely had time to breathe.
Minthara closed in, her attacks coming with the relentless force of a storm.
Each strike was a brutal arc, designed to shatter guard and bone in equal measure.
Each swing carried the authority of command, not just strength but certainty.
The widower caught the blows with ringing defiance, the longsword's edge shrieking as necrotic energy crawled along the blade like a waking curse.
With each impact, a shower of bright sparks and tiny, sickly violet motes erupted, scattering them across the cavern's dark surface as if they were dying stars falling to earth.
They moved fast. Faster than either had expected.
William ducked under the horizontal sweep of the weapon, the wind of it whistling past his hair as he returned the favor with a swift upward cut that barely grazed Minthara's arm.
The force of the impact pushed her back about half a step, sending her boots grinding against the warped planks underneath.
Her eyes narrowed, not in anger or annoyance, but in a way that seemed more like approval.
"You fight like someone who refuses to die," she snarled even as she appreciated his prowess, "I like that!"
William didn't answer.
He couldn't.
His instincts kicked in, and his body reacted instantly, registering her intent through the tightening of her shoulders, the sudden shift in her weight, and the subtle, almost imperceptible betrayals that always preceded violence.
The widower danced with the sword, parrying one strike with another, blocking a thrust with a roll, the blade humming softly as if it were eager to draw even deeper.
Minthara laughed, low and sharp, as their weapons locked.
For a fleeting moment, they were so close that William could practically smell the steel on her armor, the sweat clinging to her skin, and the faintly discernible, yet familiar, acrid tang of the Underdark that seemed to permeate her very being.
Then they broke apart and collided again.
Neither yielded ground.
Neither slowed.
Respect grew in the narrow space between blows, forged not in words but in survival.
Unseen by either of them, at the very edge of the bridge, darkness thickened.
The shadows seemed to thicken and deepen, pressing in on themselves like drawn curtains until the hunched silhouette of Priestess Gut finally broke free from the encroaching darkness.
Her eyes blazed with a feverish, almost manic delight as power pulsed through her fingertips, sending tremors through the air and carrying with it a chilling promise of what was to come.
Karlach saw her.
The tiefling did not hesitate.
With a sound that reverberated through Karlach's chest, causing a tearing roar, she launched forward, her movement a vibrant, crimson streak across the bridge.
Planks cracked under the force of her stride as she threw herself between William and the rapidly forming spell, her arms wide, body braced against the coming onslaught, and her teeth bared in a feral snarl that filled the air with a raw, primal sound.
"NO!"
The priestess's smile stretched into something utterly unhinged, her lips widening into a wide, gaping expression.
"THUNDERWAVE!"
The word detonated.
Sound became violence.
A force so powerful it could be described as a concussive wall erupted outward, the very air seeming to scream in the wake of its impact. Karlach was the first to be struck, her formidable frame lifted into the air like a mere toy before being swiftly hurled backward.
The shockwave struck William and Minthara with a force that sent them both crashing to the ground, their feet leaving the ground in the impact.
The shockwave also sent their weapons flying.
The bridge shattered.
The wood splintered violently, shattering into countless pieces. The iron fastenings, once holding the structure together, shrieked in agony as they were ripped free, their metallic sounds echoing through the air. And suddenly, the world felt as though it was tilting violently, as gravity, its grip reasserting itself, pulled everything down.
William felt an overwhelming sense of weightlessness descend upon him, his grip on the sword still firm even though the weapon was no longer in his hands. Below, a dark and gaping abyss beckoned.
For a split second, he caught a glimpse of Minthara as she was mid-air, her face frozen in an expression of pure shock and fury at the betrayal, seemingly all at once.
Karlach tumbled end over end, her body spinning wildly as she reached out instinctively towards William even as the darkness seemed to engulf her completely.
Above them, the broken bridge vanished in a storm of debris.
Below them, only endless black awaited.