Okay, I know the answer is right in front of my face, but I'm stuck in the Elven tower. I've cleared 3 levels and I have the mysterious piece of machinery, although I don't know what I'm suppose to do with it yet. I've killed everything on the map... but I'm out of doors to go through. Help please...?

I found three of the pieces, but there is another one that I'm missing... Anybody who has gone through this part please help!

Okay, I've finally made it through, and I'm in the Dwarven ruins. There is one piece of machinery found in the first level or two of the tower. There are two found in the upper level, and a warrior holds the last piece. You have to kill all of her previous soldiers, then come back and talk to her. She, will then battle you, and you get the last piece. That's sounds easy enough doesn't it?