This manhwa follows an mc that's a survivor, not a hero, and he's neither cold nor a bloodthirsty type of mc. He prioritizes what he wants or needs to get done FIRST before he acts on everything or anything else. That includes letting bad situations slip by him, but only because he can deal with them later with enough ease. The first ~20 chapters are spent showing you how he operates, what foundations he lays, and how he thinks before the apocalypse arrives
(even after the apocalypse arrives, he has an understanding that he still needs to continue pre-planning for himself and events, secure locations and resources, and protect his interests and other characters).
In this manhwa, the mc and the other characters use their brains, so you'll witness them holding conversations, and talking things out.
The mc does their best to try to do things with a clear mind
(but once in a while you'll see him form these crazy eyes and power tripping thoughts, but as of chapter 39, he's snapped himself out of 'em everytime).
Since he's a veteran, he has vasts amount of knowledge on all sorts of things, but he doesn't know everything (he's by no means omnipotent, omniscience, etc.,)
and admits that the knowledge the he has might not always be 100% reliable, nor accurate, since the game turned into reality (so everything could be up in the air on what can or can't be possible).
The art is solid, the fights are decent- I give this manhwa a 7/10, at least. If you're looking for a manhwa to read, and don't mind killing your spare time, give this a shot.