arrow keys to move, space to dash. if the music seems off sync, click the green flag to restart. if you get "game over" press the green flag twice. doing it once will do nothing
this is possible. after three tries, I S ranked it. this was made from the Just shapes and Beats Level Editor V8.0 . I bet some people say it doesn't work, but heck, it does very well! because there are no checkpoints, you get hit twice, I'm pretty sure it is not A rank. Weird glitch!