Does anyone know how to open the altar of Stormrage Castle? And how to open the door of a hotel in the cold abyss?

[阿伟]

The problem is described in the title.

[pavlonian]

if you mean the cold light altar in ragewind castle, yes, read the guide found here, its under 'secrets' section
Also the hotel? I think you speak of a house before 2nd boss, the king, and you cannot yet open that door only look through windows at people inside