Anyway, the ending to Serpent's Skull.
You fight through a bunch of encounters with snake-themed enemies (Including one memorable encounter where polymorphed serpentfolk assassins try to get everyone alone and pick them off individually.) You also lead an army of Saventh-Yhi denizens into an invasion of the serpentfolk city. You get them down there by activating the pyramids in Saventh-Yhi. They're actually drills.
Ultimately, you make it to the serpentfolk high priest and fight him and his giant pet snake in a giant room with Ydersius' huge fossilized skull in the center of the room. When the priest dies, he reveals that he actually already resurrected Ydersius from a tiny sliver of real bone in the petrified skull. Subsequently, Ydersius clambers out of a pit and you have a final boss fight against the still-vulnerable god.
I ran We Be Goblins once. In the very first meeting with the chief, after the first bit of box text, three things happened.
One player attacked the butler, one backstabbed that guy, and another attacked both those too.
We then still played out the series.
They knew better than to go back to Book 3.
From here on out the campaign is much more linear. I could go into more detail, but I'm trying to avoid spoilers.
Here is a frog playing a video game as payment.
You hit me with Explosive Runes and I'm not even a player in the group. Now I'm dead and ca'nt tpye .porparly