I wanted to take a quick timeout to link back to a couple important posts that have info in them that you are still working on.
First are the three large posts that describe the vast majority of the Horn
Lower Caverns
Levels 1 and 2
Much of level 3
Next is Cardinal Thorn’s post where he described the mission, which is essentially to get the Tears of Achlys from Vetra-Kali.
And then you had info on the ritual and the rebuilding of the alchemical golem.
The Ritual
The alchemical golem
Also recall the oozes that you were going to get back to.
You've still missed some rooms on level 3, although I think you've covered levels 1 and 2.