1. Open the second safe in Rugald's home - if you ask Rosalind for help after the rebels will lure away the guards. 2. You can sneak past the guy - if you do not step on the glass on floor you can get the ticket and leave.
And... in the next chapter, you get disguise from key I think #7, you disable the mechanism on the top floor, but in the maid mansion... you do what exactly? Lost in that mansion for a couple hours. I believe that's the last puzzle for me to figure out. Does it have to do something with the jail?
you can burn with flint the books on the first floor of the mansion, get a drugged tea (tea +pills) and after you reply the Knight’s questions near Bertrand give him the drugged tea. That is how you avoid all the fighting completely.