I think I missed this topic somehow when it was first posted...
There are a couple sections that you need to do some platform jumping for, which are generally pretty easy (at least using a gamepad on the Xbox version). On the PC there are a couple topics with tips on jumping.
BTW, for step 12 above, if you use the scrying stone yourself you can mindread the ghost before the fight for a stat point.
For step 13, don't be too hasty picking one of the 4 items on chains that you can see from where you lowered them.
To the back left, out of view behind a wall/column, there is a skill book on a chain, near where you teleport if you use the scrying stone yourself.
