Thanks for playing! One issue that I've seen with people playing post release is that I was a little obtuse in my hints. If you have the key to the master bedroom it also opens the other room on that floor. After talking with that person, they will give you the last key you need to go anywhere in the house. From there it's best to use potions on absolutely everything.
Once again thanks for playing, and my apologies for things being so obtuse.