Shadow Owl in "Mist Hunter" is a fun and powerful hero, well-suited for solo play. To explore the Calamity difficulty Fortress, you'll need some技巧. First, in the Prison area, spawn from the bottom-left room of the Warden's Quarters, grab the key, deal with Liangzi at the entrance, then enter the Treasure Room to open chests.
How to Explore the Calamity Fortress Prison as Shadow Owl in Mist Hunter