I believe I have exhausted the wizard's note to kill the fire giant. I know I have killed over 100 fire elementals. Yet they keep coming. Am I missing something here. Please someone assist in the most grevious challenge.

The fire elementals keep spawning unless you kill them the right way.

Spoiler:
:
:
Instead of just killing them with weapons, spells, and such; lead the fire elemental into the cold lab. They will freeze there & not respawn (you have to kill 4 of them that way).

you dont have to kill them. here is how you do it.

One at a time get a fire elemental to follow you into
the ice room. It will instly freeze.

do this 4 times.
then the giant is an easy kill.

Thanks everyone. I was just tired of having to much killing time.