Since you beat Flowey at the end and were told to play the game again without killing anything , what you have seen is the neutral ending . You have , at this point , completed the game , but the pacifist ending that the game is directing towards , which does indeed involve getting through the game without killing and making friends with all of the main characters , namely Papyrus , Undyne , and Alphys is far more of a fitting conclusion . I definitely agree that the neutral ending does not provide the level of closure that you would want from the game I can also promise that the pacifist ending does a much better job . Now , if you haven ' t killed anything on the playthrough you ' ve already done , you can just reload your save and do the little sidequests that involve becoming friends with the main cast , and you ' ll be pretty much set for the pacifist ending . However , if you killed anything at all , you WILL have to play the game over again from the beginning . Hope that this is the info you ' re looking for !