How do you get this ending? I only ever got the "Nothing but blood in the desolate field" ending. I don't know what triggers each ending. You clearly didn't spare the lovers, rats or egg, so that can't be it. I've gotten all achievements and still never got this ending.
Did you kill the gnome by revealing all empty squares? Did you kill the mine king and blow up all mines? Wizard (aka slime king) which drops the slime scroll?
90 days ago(+1)
I think that you only get it on your first clear, so after you clear it for the second time onwards you get the "Nothing but blood", I have gotten the the first ending multiple times, but only when I am logged out and on a different computer.