You do not need to complete the challenge to get the cursor with the Purple Remedy. Just add this Fortnite cursor with Purple Remedy skin style Purple Medaxe pickaxe to your collection and enjoy.
Install it from official Chrome Web Store
Install it from official Microsoft Edge Addons site
Install it from official Opera addons site
Install it from official Opera addons for Yandex site
Install it from official Firefox Browser Add-ons site
Install it