Pyramids

Do you think it's possible to complete the pyramids on expert difficulty with the Necropolis faction?

P.S. I heard a guy completed it on impossible difficulty in a week.
It seems he used Warlocks.

Added after 13 hours and 23 minutes
That was a long time ago when I played, I finished in third place.
I played well, but there were two things I couldn't achieve, and I've had those two ideas stuck in my head ever since.
One was completing "The Jolly Roger" with Elves in the first game, and the other was completing the Pyramids with the Necropolis faction in the second game. The maps are quite similar.
I got both games, and I completed "The Jolly Roger" using save files.
But the first game is easier - you just have to endure it, and then a well-developed hero can carry you by using 30-unit stacks of Fey Dragons. The AI is also programmed worse, and it almost never surrenders.
Here, you can't do anything against the dragons. The heroes surrender while being taken down by magic.