Make sure you complete the Papyrus Date before moving on to this area for your pacifist run. From Snowdin continue heading East until you return to the checkpoint with the save point and Sans. Save ...

This page can help you get through Waterfall after completing Snowdin. You will need to kill 18 creatures as well as Undyne to meet the criteria for a genocide run in this section From Snowdin ...

Waterfall is Undertale's third area and middle point, following Snowdin and the Papyrus boss fight. The following is designed to be played as part of a complete Pacifist guide - in short, going ...