I don't know how many endings there were, I only played one - gave the book to the lawyer as I was told to hehe.
I did encounter some problems, firstly my first 2 attempts went to the credit scene right away before I could play. The opening prologue text is too small, even at full screen and the font didn't match the game.
For me I, I liked the big info symbol about the interactables but I would have preferred to click on the item itself rather than the symbol.
The portrait puzzle is available from the start but nothing happens when you complete it. Then after I'd done the other stuff, that's when I went back and clicked on it again and got the key, I'm not sure if I only got the key because when you complete it, the back button isn't blocking the puzzle behind it so when you click to go back out, it moves the puzzle piece underneath.
It was a nice puzzle, not too difficult. I liked the letter, that was a nice touch but the info interaction with the globe seemed to disappear after I got rid of the snake - I no longer had the option to "get the globe", now I realise that getting it wasn't the point but it seemed odd that I got rid of the snake so I could get it and then it was no longer interactable.