i"m stuck

I'v gotten past the warders, and opened all for the 4 door coming out of the round room with the dusty books. I've gotten Kiel helmut, but now I cannot get out of the throne room, where the helmut was. I've attacked dummies, shifted stones twisted statues, but cannot get the two secret doors on either side of room to open, or the secret door on the right side of the room where the stones are (by the beds) Help!!

That's a bit odd. Is your whole party in the room where the helmet was? Every time I've been there the door on the west (left side as you look at the screen) opens after I grab the helmet and battle the shapeshifters in the poison gas. Did that happen? If it didn't you may have to reload from the autosave which should be from when you came down to that level. Check the post by exodus.