Great guide I found, getting the safe key, killing Andrea and Ashmann tricks, very easy!

[BAI GAMING]

https://bai-gaming.com/guides/puzzles-guide-walkthrough-remothered-broken-porcelain/
https://www.youtube.com/playlist?list=PL-Hm3rGMVE2u3NxZyJrgRGbGmLSQxZjdw

I struggled with killing the bosses and what to do with the dog, but this guide has all the puzzles and solutions listed. The videos have cheese techniques for Ashmann, he uses the counter to sneak behind Ashmann easily. All puzzles completed too, didn't know how to defeat The Porcelain until I saw this.