It’s here at last for paid members in early access mode. Check out my Cheats for Skullduggery Island post for all the cheats and tips, including the walkthroughs.
I’ve got part one finished with a video walkthrough to help you figure out Fort Ridley (the first part.) The other island walkthroughs are coming really soon! I’ve already got the map complete and am busy trading to earn enough coins to buy a big enough ship! So far this quest is definitely the best one on Poptropica. There are a lot of great secrets and it’s huge!
P.S. Here’s a screenshot of what Skullduggery Island looks like when you first arrive.