Ruirized achievement in Holodance

This is the advanced version of "I use My Head". The first time I saw Ruu (Ruirize on Twitch), he played an osu! beatmap, with Sliders and Spinners, using only his head. So he truly earned to have his own achievement. The way to get it: Play a decently difficult osu! beatmap only with your head, and catch "enough" notes.