Talk:Undyne's Letter/@comment-34425504-20190424161554/@comment-39385741-20191016003920

In order to get the letter from Undyne, you need to fight Omega Flowey first. After fighting Omega Flowey, you can load your save file. When you leave the Core, Undyne will call you and ask you to deliver something for her. When you go to Snowdin and talk to Undyne, she will give you the letter.