It's not as bad as people claiming it to be.
If you have been watching Korean dramas, then you'll be fine.
But if not, and you are just watching this for the hype of S1 then you'll be a bit disappointed.

S2 is a bit watered down version of S1.
I would say S1 was gruesome. It was so brutal. In fact they It revealed the vicious nature of humans. Games were much more dramatic in S1 and were the main focus of the drama. And the world had never seen a drama like this.

But things have changed a bit now. Now we are in 2025. Kdramas are more popular now. We have seen these gruesome type dramas popping up here and there, like Sweet home, Parasite the grey, Gyeonseong creature, Moving, Shop for killer etc. So S2 was not that sensational since people are familiar with the recipe.

Compared to S1 games S2 games were not that dramatic. Games were not the main focus of the drama at all. It even starts with the familiar game Red light green light. And we only played 3 games within the 7 episodes. So there's much less thrill to the audience. And we're are left a cliffhanger for the grand finale.

What's there is more background information. What was ML upto? What was JunHo doing? etc. S2 also has some stories to tell. There's even a storyline of a Mask Guard as well. Also the main storyline progress and we have more screen time with front man ever before.
So there's some stuff to watch and enjoy.

You can wait till S3 is released to watch this season. That was my plan as well. But there are too many spoilers on the internet. So before it's too late I just watched it. Still 8/10 drama.