The MC has no personality at all, the plot is boring, and the setting is unoriginal. All in all, give it a read if his cheat interests you (it's not great either), but come prepared to regret it.
The setting is a lot more original than you'd think from the first chapters. It's not perhaps unique but I haven't seen it in other dungeon novels. However if you don't like the writing you likely won't make it far enough to see the world slowly explained so it doesn't matter much.