Having gained experience, I decided to finally close this gestalt.
The winning Walkthrough took as many as 56 saves!!!
Completed it in 161 days, received an adept. Symbolic, since the mission objective is to save the adept.
I liked that the author used cut dialogue voice-overs in the 2nd clip; I've definitely never heard those in the Campaigns, and I liked the first fight with Lorenzo.
A slight bad aftertaste remained from the final part; the last battle ended in a couple of minutes. The demons turned out to be really weak and without combat scripts, and the second fight with Lorenzo also fell short—he summoned very little undead: 14 vampires, 300 skeleton archers; my level 29 hero certainly didn't feel that.
I think the author got tired of finishing the map, which is why the finale turned out so simple, or perhaps they originally planned a brutal start and a relaxing finale.
Despite all this, the scenario is very high quality and deservedly considered a classic of fan scenarios, especially for its time (13 years ago).