>>1058336just did it, on 11th try. I have played some Undertale years ago, but never genocide.
But I have seen many hours of Sans on Youtube/Twitch, so I know all his patterns, so it's definitely not blind.
Some things I thought were easy on playthroughs (when he smashes you into a wall and you have to jump in the opposite direction) were a lot harder actually, while other things I thought were hard were actually very easy (avoiding the bones in the menu).
And those circle movements are awkward as fuck with keyboard.
