i think with 25 it's good enough? I got it but it won't change anything tho.. the dialogue is a bit different but the end result will still be the same.
Not really, it only happened once, during your .. well.. 4th nightmare when you had to choose what your TRUE desire was. The warning text was in bold and red and you're stuck to that decision.
Afterwards at Plains of Death you can still choose different options, Nameless just tells you that he knows about your actions.
I said I wanted his dick and have sex with him and yet I'm still able to go back to that moment and refuse his intimate offer..