The pirates did make an attempt at stopping the party from leaving not just the cave, but the island itself via ship boarding combat. They are woefully unsuccessful and upon reaching Thorwal the party sells the looted treasure to now sit at over 2K Ducats in the kitty. Taking a guess with the assembled map they headed back North to Phexcaer and along the way Vayshen spots a marker point. A marker to Hyggelik's treasure!
That would be incredibly good spotting.
It is a hard slog crossing the river and hacking through vegetation for days. Zubon and Emmo fall sick from the journey but eventually they find some ruins deep in the mountains - a crumbling castle. Literally, as falling debris and twisted ankles do more damage than the numerous zombies wandering the grounds. There's also a cool puzzle door involving mirrors and separating the party but the main event is a large chamber with a lot of undead.
Enemies all around - just where we want them!
Weakened from the journey here the fight is pretty tough, with Curian getting clawed a lot and Emmo too sick to actually contribute. Still, they are on the verge of winning when a voice calls out to the zombies and orders them to stop fighting. It is zombie Hyggelik, cursed to undeath by some treasure he and his men found years ago. Hearing about the impending orc attack, he willingly hands over Grimring to Shintar and commands the team to protect the lands from the orcish invaders.
You aren't looking so good, Mister Hyggelik.