Who completed The Bards Tale to the end?

Hello, All Subject! I passed about 5 years ago when I still had a real spec. I'm almost through That's it, I reached the last floor in the Mangar tower, explored half the floor and didn’t could have gone further. There in one place on the wall there is a triangle and a square drawn and circle. There are such magical amulets that give +1 to Armor class. Honestly I got only two - one in Killeran's tower, one in the king's palace. I'm the third one I read it in my save. At the same time, I read Pure Blade to myself - the best sword for palladin, adamantine armor, small items, and a poisoned dagger - from one piece of fluff it hits anyone in the hands of a monk - super, because the monk almost always hits first. Yes what to do with amulets and how to proceed further? I also could not overcome the endless street, and in the king’s palace on there is a room on the second floor that I was never able to get into. Does anyone have anything to report?