DelzGB

[The first arc is about obtaining the system, so please be patient and give the story a try! I promise it will be worth it.] 
In a world where gods have erected a worldly monument, the "Tower of Yggdrasil," people are drawn to its impossible challenges. This towering structure pierces the heavens, concealing both unimaginable beasts and priceless treasures within its unforgiving depths.

Enter the realm of "Adventurers" – daring souls who ascend the Tower's brutal floors in pursuit of glory. The fortunate ones secure the sponsorship of gods, gaining their Blessings to wield divine power in the face of peril. Yet, amidst this celestial lottery, Bastian, an unfortunate adventurer, remains unblessed, navigating the treacherous terrain with only caution and cunning.

As Bastian teeters on the brink of death, a mysterious voice intervenes, offering him a lifeline: [Prometheus System Awakened]
Becoming a chosen “Invictus”--a person chosen as the champion of their god, he finds himself in the ranks of legends, having to learn all too quickly to adjust. 
He must defy the odds, unravel the mysteries of Yggdrasil, and face the trials that await beyond the clouds, making either ally or foe of other Invictus, and the gods that dwell in Yggdrasil.

Tower of Yggdrasil: From Zero To Godhood

The sinister being raised its hand with the clear intent of taking action, however–the berserk Invictus was faster, more aggressive. Alcides tore forth with reckless abandon, grabbing the entity by its face as his fingers dug into its skull.

There was no reason left in the man's eyes; only the whites of his bloodshot eyes were visible as his teeth were bared, dragging his feet through the field of bones before slamming the baleful one down.

"—The greatest of mankind? Not even close!" Alcides roared as he slammed his steaming foot down upon Nemesis.

The stomp erupted the landscape, flinging dozens of bones in every direction while the unfortunate ivory directly around the man was decimated. Tremors grumbled through the vast space as sediment trickled down like snowfall; a mere downfall of the man's foot seemed as though the entire region had quivered.

Overcome Impossibility