Originally Posted by
ishi
yup, great game, couldn't bring myself to complete a genocide route though 
I tried to do genocide after true pacifist route. After I killed Toriel with one hit I was surprised. But then I read all her next dialogues and I was ashamed and frightened at the same time. And I quit the game in tears lol.
After one mounth I decided to do genocide run once again. I beat Undyne in my second try, got dunked in first attempt and killed sans after 10 tries.
This is just incredible! It's like you're playing completely different game. Just try to deal with your feels and beat shit out of underground!
And yeah! Did I mention about post genocide true pacifist endings?