So, first-of-all, i don't even understand what this story is about, like, what's the point of this story?
If it's a "revenge manhwa" like "Kaifuku Jutsushi no Yarinaoshi" or "Fukushuu o Koinegau Saikyou Yuusha wa, Yami no Chikara de Senmetsu Musou Suru" when you empathize with the MC's, cos they're gone through hell in their first life, and you actually enjoying the suffering of people who're made suffer MC. It's doesn't work with this story, his comrades come across as strick and tsundere at most so far, and not as sadistic monsters like in kaifuku or fukushuu, so i have no idea how can i empathize with this guy.
But okay, if we put that aside and just take it as a "manhwa when the badass guy doesn't give a shit and just going straight for his goal" , like "Gu Master" for example, IT STILL DOESN"T FUCKING WORK, because the "goddess" in the 1 fucking chapter told him, that he didn't get home LITERALLY because he killed his comrades coz they're was "annoying"
AND logical fucking thing to do would be just to endure and don't kill anyone in this life and he'll be back home.
But instead of that, he's doing the same fucking thing, and he'll probably get F again, and he's gonna be forced to retake it again and again and again
So yea, he's fucking retarded, and the plot is fucking dumb