Crash Bandicoot N'Sane Trilogy allows you to take control of Crash's Sister Coco in the original game now even though she debuted in the second game. To use her, you must defeat the first islands boss 'Papu-Papu' and you can go down from his level to the change station. Here, you'll be able to switch between Coco and Crash at will and for this achievement, choose Coco and the next level should give you the five spin kills you need.