There's no actual story here, the MC has no goals, his head in the clouds and the only personality he's shown so far is "I'm awesome, therefore worship me!".
As others have said, this is a mishmash of elements from other stories just thrown together in a pot with no rhyme or reason, with extremely obvious direct ripoffs here an there.
The MC's whole trope of "Getting powers like his video game character" is also terribly done. Clearly the game and reality are totally different things, but as soon as the MC goes out into an established pre-existing dungeon space, the boss suddenly behaves exactly like a mob in his game... Author, his game character fantasy exists in his head, not in the actual world. This gets even worse when his next step is to go to a specific dungeon to get new spells, because that's how it worked in his video game... Again, why do old established dungeons suddenly exactly match this guys old video game? It's all backwards.
His skills themselves are also a complete mess. His skill to duplicate things is initially shown to have significant limitations and cannot duplicate anything of value until he levels it up... Next chapter he is easily duplicating every powerful artifact he encounters. Next, he has an "armor" skill that he uses to project a barrier in from of him, but then he suddenly uses it on his hand to win a... hand squeezing contest of strength?! Or how he apparently has to go into specific dungeons to get skills, but apparently he can get all sorts of absurdly overpowered passive skills for free just by jogging in the park? Or how alot of the relics and early skills made an emphasis on increasing mana/mana-regen/etc, but he is never shown to ever care about mana at any point and just spams freely. Or how how he has a mechanic/production skill, and the very first thing he does is use it to instantly create flying modern looking drones that have nearly as much firepower as he does... Or how his very first fight (With a strength stat of 5, e.g. absurdly low) with a borrowed cheap sword, uses it to directly pierce straight through a metal shield and the enemies metal helmet behind it... etc...
