I'll be frank, I really don't like this LN. In fact, I downright hate it. I couldn't even read a quarter of the story before I got fed up with it.
The reason I hate this LN so much is, when compared to the other Korean LN "The Legendary Moonlight Sculptor", they are, trope for trope, as identical as you can get without plagiarism suits happening. Ark's author would be the one getting sued. And LMS is better anyway.
Let me list the similarities (don't worry, no spoilers) :
The MCs of both stories are poor AF, for slightly different but ultimately irrelevant reasons. They both have cute little sisters, and an ailing parental figure (grandma and mom for LMS and Ark, respectively). They are both therefore jerks with gold hearts and are obsessed with caring for their families by auctioning items from a 'true' virtual reality game a la SAO (with fewer flaws) (not to say there are no flaws) (writers really can't do game design for some reason) for real-world cash.
Therefore, they are practically OCD when it comes to collecting japtem, aka. "20 bear asses".
Both LNs feature romantically hopeless martial artists that join the game to have enjoyable fights. Said martial artists were sought out by both MCs in order to improve the MCs' skills in-game via application of IRL techniques learned from said martial artists off-screen.
Both LNs feature a certain merchant player that the MC shamelessly takes advantage of.
Each MC has a single, rich, as*hole antagonist that's basically the #1 account in the game before the MC comes around.
Within the game, both MCs get locked into shitty-looking 'hidden classes' early on. #badgamedesign
Both MCs have minions. Both MCs treat their minions abominably, yet somehow retain their loyalty. (But Ark's minions are #different)
Pretty girls in general (and one romantic-interest girl in particular) hang all over the MC for no apparent reason. (Ark does this in a much skeevier fashion than LMS) (which actually goes about it halfway decently and even builds up to it).
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Quite a list.
Literally the only differences are in minor details, and even then LMS comes out on top.
LMS at least runs with the question of, "If you live in a world where combat proficiency is necessary, of what use are artistic professions?" Weed (the MC of LMS) gets forced into the artistic Sculptor class and becomes a boss anyway. On the other hand, the class Ark (the titular MC of Ark) is handed is just some ban*l assassin/beast tamer knockoff (which involves a rather s*upid name and backstory, to boot).
Even the game mechanics are virtually identical, to an inexcusable degree. The death penalty is slightly different between games, there's a differing random stat type or two, Ark uses single-use 'scrolls', the quest difficulties use ever so slightly different ranking systems and... that's it. That's all the differences. Ark just avoids gaining "Fame" stat where Weed actively increases his "Fame" stat, which in plot terms means literally nothing.
***
I mean, look at all this. What am I supposed to rate Ark as?? It really, really doesn't have any merits to call its' own. I won't be finishing the story; so, sorry.