Suddenly, in a distant area shrouded in darkness and untouched by light, countless eerie red eyes flickered in the shadows.
Like will-o'-the-wisps from hell, eerie and terrifying.
Immediately afterwards, a large swarm of mutated rats, about the size of an adult husky, surged in like a black tide.
At the same time, countless mutated bats of varying sizes flapped their wings and flew into the pre-designated battlefield area from the top of the passage.
"Fire!"
"Da da da da da..."
The sound of hundreds of heavy machine guns firing simultaneously was astonishing.
The already deafening gunfire sounded even more terrifying in this environment.
Fortunately, everyone here is a seasoned evolved being.
Otherwise, the sound of gunfire alone would deafen ordinary people in the pre-apocalyptic world.
Bullets rained down, instantly turning the mutated rats and bats in the front row into a bloody pulp.
Blood and bits of flesh splattered on the cave walls and the ground, which was already covered in the blood and flesh of a level three evolved beast.
The stench of blood grew stronger and stronger, almost suffocating.
The loud gunshot startled all the mutated rats and bats.
But their craving for the flesh and blood of a level three evolved beast quickly made them forget everything, and they desperately pushed forward with bloodshot eyes.
They want to fill everything with sheer numbers.
Countless mutated rats surged forward like a raging tide, while countless others were blown apart by heavy machine guns amidst a hail of bullets.
Their bodies exploded, scattering their internal organs, bones, and fur everywhere.
Soon, the ground in the distance was covered in blood, thick blood pooling into dark red streams that flowed slowly.
The ground and walls were completely stained red with blood, as if shrouded in an eerie blood curtain.
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