White palace secrets and lore request

[Deatheye]

ive looked on google here and reddit and have failed to find a good walkthrough of all the secrets of the white palace (when I completed it I didnt find any secret walls or lore)
so im asking if there is any place where I can see all the white palaces secrets and lore bits since im not in the mood of doing the game again just for the white palace

[Deatheye]

allso the fact that the white pallace is no longer accesible after you get the thing is BS

[eradmis]

https://www.youtube.com/watch?v=CHBqTqUywNE This video contains 2 of the 3 secrets I know of in White Palace. The third one is here https://youtu.be/2wVYp3962gk?t=1573