My Legendary Weapon Can Evolve Infinitely!

When Earth was finally connected to the multiverse, the entire world erupted into chaos! It was as though reality itself was contorting to accommodate countless versions of itself. Astonishingly, it began to expand, stretching its boundaries beyond imagination.

At that time, Jason was recovering from the betrayal of his girlfriend cheating with her supposed best friend. He looked for solace by retreating to a serene lake for a weekend of fishing. Craving solitude to deal with his thoughts, he wanted some peace. But as soon as he stepped out of his car, the ground convulsed violently. Much to his surprise, a mysterious system had been activated, revealing portals to alternate dimensions. Suddenly, Jason found himself thrust into the depths of a dungeon, a valuable treasure chest right before him.
Within that chest was the Infinite Dagger—a legendary weapon capable of infinite evolution! From a mere dagger to a formidable sword and even transforming into a bow—its potential knew no bounds!

Jason was surprised at his unexpected fortune, yet he understood that obtaining such a treasure wouldn't be without risks. No, crossing this dungeon would be a stroll. He stood at its precipice, facing a boss—a towering, purple-hued Colossus that looked like it came out of a fantasy world. To add insult to injury, he would need to get rid of the boss's minions.
The real question remained: How could he, at level one, defeat the dungeon's boss?