Translation is okay.

Plot isn't your typical Dark Fantasy in a modern world death game cause it has a mix of sci-fi elements.

The MC is likeable at first but gradually you'll get irritated by his actions like he has some sort of psychological problem also the story is more on fighting and collecting loots and achievements.

The only comedic part is him advertising for an intergalactic weapon company.

Kind of a blend between hunter end of the world stuff and death game. Perhaps the blend is unique. Don't know, maybe you've read something like this. Death game aspects though so I mean if you like that you might like this. I didn't hate it outright, which is rare for the death game genre, but the more I read the less interesting it is and the more evident the death game elements are the less compelling it is. If you like those things though, you might enjoy it.