Hi,

Zizzax is standing on the steps next to the statue that opens the 4 elemental portals. They are all open but perhaps I didn't go into the last one I opened. I don't remember. I will try going into all 4 and see what happens.
Every other special room is there besides the Chapel and I have been in them all.
I have triggered all the Stones. There are only inert stones left in my inventory which is how I know for sure I have 16 of them.
Thanks for the advice. I'll let you know.
Hagn