Read through chapter 32, current thoughts:
Our MC is still a chad that doesn't take bullshit.
The story begins with the MC expecting to return home after defeating the demon king, but SURPRISE! The gods of this isekai actually grade your performance and he failed because he acted like a normal person would and got fed-up of his "comrades" basically bullying him for 10 years and killed all of them (epic gamer moment) to level up enough to defeat the demon king in hopes of finally returning home. Since the Gods deny him his right to return to earth he has to defeat the demon king all over again with his memories. He is still a gamer (bottom text) and uses his past memories and the game mechanics reach the goal of "killing the demon king" efficiently.
He also now knows that he is graded, so we weighs his decisions on effort, time and objective outcomes. Like he kills a fleeing princess instead of helping her overthrow her uncle for a distant kingdom's crown because he knows from his past play-through when his party saved her and installed her on the thrown she went batshit kim-jung-un on her subjects. He could've talked it out, add her to his harem, teach her about empathy and then overthrow the "evil uncle" (not epic), but he doesn't feel like it (we live in a society).
Reading through the comments is also hilarious. "Oh he's an asshole" "Oh he's so self centered". Yes . I like when the MC is not a cookie cutter bog standard isekai mc who is always simping. Blame the system that rewards this type of behavior, not the player. If you're tired and want something self-aware and critiquing of the usual isekai recipe while still being an isekai then I recommend. It's not for everybody and not the highest quality, but it is refreshing imo.