To get them, you will have to spend some time on Twitch. The rewards are given out through Twitch drops. The good news is that there is no limited selection of Twitch streams you must watch. You can get all remaining Ashe’s Deadlock Challenge rewards by watching any Overwatch stream...
That isn’t the end of the Witcher goodness in Lost Ark. According to theevent’s main landing page, there will be further reward opportunities during the event, in the form of Twitch Drops that contain Witcher-inspired Mokoko skins for watching certain Lost Ark content creators on Twitch whi...