ok, rereading it….it isn’t him. I thought it was Harley because of the whole “pee drinking” thing since I know that is a maybe thing that survivalists do, and he is an explorer.
But it isn’t him, and that makes it sadder.
Because this is just a normal regular man who was managed to survive the meteor impact, only to struggle through monsters and an apocalyptic setting before dying.
At least his dying moments were in comfort with a story being told to him.