Overall amazing manhwa, what a hidden gem. Story was creative and unpredictable. The setup is very good.
The world building was good. Loves how it doesn't forget to expand the world as the story progresses. Likes how it differ from common world building the story like this have.
The progression and pacing was great. Feels like there are something that is changed or acquired after each arc. The stakes also rising by following the progression of the story (e.g. we went from slow adventurer's life to serious to handling world threatening events).
The motivation was alright, it was explained very well that the reader could understand. Loves how the author uses secondary motivation to progress the story early, while the main motivation was elaborate further as the story progress. But, aside from the MC, some characters do lacks motivation and not as well explained.
The story might progress with many missing puzzle pieces. But in the end, the author stitch the missing pieces together, usually in an unexpected way.
Finally, it's crazy how the author recall many old stuffs from lots of chapters ago and elaborated it in more details, even though it was unnecessary.
In the recent chapters 167 (which feels like the climax of the story), the resolutions and conflict feels like a forced glue tape to finish the missing puzzle beforehand. Particularly, the main villain was uncharacterized and quite undeveloped. Which, destroy the build up we had so far. If nothing changes, I hope the story doesn't drag too long.