Talk:Genocide Route/@comment-212.120.86.91-20151026170643/@comment-27108700-20151026195113

As long as you reset after you beat Sans, you don't have any future Pacifist run permanently altered.

Alternatively, the latest you can back out of a Genocide run is at Mettaton.

Missing an attack or failing to clear out Hotland will automatically end the run, giving the neutral Alphys ending.