Hope is a lengthy challenge mode reaching twenty minutes long. Bullets have changed from a purple color to a shining star, which can easily blend in with the background.
With credit to Gamingnerd on Youtube, I found these videos to be the last piece to passing Hope. Rather than show how to complete the entire archive, he takes a minimalist approach and only purifies enemies that can damage him. Turn annotations on and pause every now and then to let him get ahead by a section or so before copying the video.