User blog comment:Kevinpeng/Kakao Cookie Run Season 9 Dessert Paradise/@comment-26044650-20160818031522/@comment-26332895-20160818035856

Malicious purple ghosts will appear, and you charge up to shoot it. You slide to charge up an arrow shot. Once the bar hit max, stand up to shoot. After you shot 10 of these ghosts (at cookie's max level) you enter invincible mode (with no speed burst), shooting barrage of arrows. When it ends, the counter will reset.

Every shots will produce feather jellies.

If there are no purple ghosts present, the cookie will not shoot after charging up.

I think the charged arrow can destroy obstacles too, but it's luck based.

Did I miss something?