Watch the blue bar to make sure you aren't going to freeze to death.
Dodge out of blue circles to avoid freezing. During his stay on the throne, he will spawn easy-to-kill ghost wolves. He will stand up on an ice throne that you have to break to 1/3rd health then he drops down. Follow the rest of the collectibles on the map before finally reaching the boss. After activating all 5 you can go to the purple star and collect your first artifact SKATHI'S GREATBOW - GRIP (SKA 1/3).
You will see a broken tower with boards on the front of it. There are 5 levers that I have numbered using purple circles on the map.
