Seems like it's the final battle. Susie, a true hero, stands in your way. The battle rages on. Your memories create attacks that aren't even real. Your memories create Berdly, who's not even here. You can't take it, the faster you get rid of Susie, the better. Arrow Keys -> Movement Z -> Select X -> Cancel Selection
Thanks to @Testerc00l for his Deltarune Battle Engine V2 Song: https://www.youtube.com/watch?v=-9L8-O_OD7w
