The Isle of Thieves SideQuests
Risen 2: Dark Waters Walkthrough and Guide
by CMBF 
The Isle of Thieves SideQuests
Reached as part of the story line as you follow Captain Slayne, The Isle of Thieves is home to the Gnomes and some fun side-excursions and quests, so hoo-ah!
(2.4.2) The Isle of Thieves > The Gnome Eater
Talking to the Kaan will flag this quest to go into the nearby valley and kill the monster that has been eating the gnomes... Here is the thing -- this beast eats and destroys any weapon you are holding EXCEPT for Mara's Spear! So make damn sure that you have armed the Spear BEFORE you confront the beast. Also, there is a ledge you can climb on on the right side of the valley that should prevent the beast from killing you while you kill it. Just saying.
(2.4.3) The Isle of Thieves > The Treasure in the Cave
Obtained from a Message in a Bottle found on the Sunken Ones Beach after the battle. Open the bottle to find the map to flag this quest! Run back to the cave and just inside is the red 'X' where you dig!
(2.4.4) The Isle of Thieves > The Treasure in the Valley of the Gnomes
You can purchase this Treasure Map from the Gnome Merchant in the village to flag this quest. Simply tag the quest in the quest list to see where you need to go!
(2.4.5) The Isle of Thieves > The Treasure in the Sea
This map is obtained by looting the chest from The Treasure in the Valley of the Gnomes! The X is down on the beach.
Reached as part of the story line as you follow Captain Slayne
How do i get to the island of thieves? Is it a add on