Check the oficial guide for details, https://docs.google.com/spreadsheets/d/1fDTga-dhWarmZjoPLGN9X85UqCQwDj1L9NpInVcV... I'm not sure of the required levels because I did naturally
i have been looking at the guide but i think i just need 4 purple hearts which i have more than enough of now so i should be able to do it as soon as i manage to not get myself killed before 17:00 XD
