After 8 episodes and about 10 hours of play the Enchanted Cave 2 has been beaten. The dragon-man I started out with has taken down not only the Necromancer but his ultimate creation the demon he crafted using the souls of 999 adventurers and capped off with his very own soul.
For such a significant sounding threat, the demon was surprisingly passive. It seemed content to squat on floor 100 waiting for me to show up and in the meantime just the big evil thing it did? Make it rain. Once the summoning is complete the rain begins and does not let up until it is destroyed, I guess sometimes demons are a bit odd.