The Dungeon Cleaning Life of a Once Genius Hunter

The beginning of the series focuses more on the protagonist's professional development as a dungeon cleaner, but I'm concerned that character progression might become skewed or too rapid in episodes 80-90, where he unlocks all his top 1 hunter skills.

Just another shallow dungeon + back in time story, plot isn't very interesting, there is no novel variation on the formula, characters are unremarkable and there are lots of incongruences going on. It's somewhat entertaining or said in another way, it's readable and not terrible.
So... not recommended unless you have too much time on your hands.

This series' enjoyment mostly hinges on the comedy, and how much you can accept the protagonist as the protagonist, and the treatment of the protagonist by the series. Essentially, we have an asshole protagonist who has lots of enemies because he's rude and has no self-awareness of how much he pisses off others. He then gets stuck in a situation where he is forced to do "community service", or he's fucked. Hilarity ensues when the guy is caught in very uncomfortable scenarios where the everyday people would find it ordinary (he's the type akin to rich snobs malding having to ride a bus). It's a light and funny read with a little overarching plot that solely exists to drive the story and scenarios, nothing too serious, just enjoyable if you like stupid hijinks. So don't expect something overwhelming COOL or GRAND, because that's not what the series try to achieve! Compatively, think of something closer to KonoSuba; where the action isn't the main essence? My personal take is that a too epic of an action scene would have detracted the vibes from the goofiness... so it's good that it's not overwhelming here~

Another "unique point" this series has, is that it tries to imagine/explore a different angle that tries to tackle dungeon/hunter worldbuilding that is laced with the practical restraints, that is not focused on the usual overpowered hunter dynamic. I find this perspective fresh and interesting (a bit technical too!). While there are plenty of hunter/dungeon stories that focus on politics of the upper players, this one focuses much more on the everyday folks (and worker rights!).

Moving on, there are 2 types of comedies:

• Seeing the evil guys plotting an intricate plan on the office politics level, but just to fail flat (this also applies to the protagonist at times when he's being an ass).
• Due to the protagonist having to respect the constraints created by the system, everything he does is seen to be "objectively good" by any third party, earning him a misunderstood reputation akin to "Korean Jesus".

The side cast is pretty chill and adorkable. They're mostly ordinary good-natured people exuding "wholesome" vibes. So, if you like SOL vibes with a sprinkle of action, there is a high chance that you'll like it!

Should you read it?

It's closer to a feel-good SOL with dungeon elements rather than the usual dungeon story with SOL elements. The closest vertical scrolling manhwa I can find the vibe closest to this has to be My S-Class Hunters (although that one has some BL undertones, while this one doesn't). It's enjoyable if you want to see the undeserving elite being punched down. There are good elites, so it's not an "all elite is bad" story.

Do not read it

• if you expect a serious romance story (there is some admiration here and there, but no serious full-on romance)
• if you want a story with epic fights every chapter (there are fights, but they are not the highlight)
• if you want a story with a tension of impending doom (it's a chill story with ridiculous stakes)

Mildly entertaining to pass the time but really nothing special.
The setup of the story is poorly thought out but that's not news to anyone.

It's not the best dungeon manwa for people who want to read securing items from dungeon leveling up, ranking and defeating and other rankers from towers with dungeons and all that it's simply is the best story which is told through dungeon of the MC and his development as a character the mc is definition of being Selfish to being Hero who cares, A perfect transformation of Villain To Hero the best I have seen so far and dungeon dangers simply cleaning showed very greatly with great action sequences and great artwork overall it's masterpiece can't wait and very excited for the next chapters!

Somewhat entertaining, but there is nothing above okay in this. Neither the art or the story or the characters are notable, but they are all passable and you can relax while reading it.

The plot doesn't make much sense really. The premise is there are like 20 people who are responsible for the extremely dangerous and yet critical mission of cleaning up dungeons after hunters kill the monsters. In spite of that, they are extremely understaffed and underpaid and generally suffer from workplace discrimination... Why can't they just quit or even just protest ? I don't get it. They aren't slaves. There are no worse jobs in Korea.

The MC is an asshole and weirdly enough, he barely changes. He is either forced by his system to do the right thing, sort of stumbles into it or others misconstrue his behavior to be something it isn't. It is completely unclear he is even marginally a better person at the end of season 1.

MC is an extremely arrogant and unfriendly person. That's both infuriating and refreshing, because there is a lot of development possible.

The story has only a few "how is that possible" moment, and the art is good.

Edit. At chapter 69, I stopped because it became boring for me.