stuck with the rock and the branch. Probably have to take something from the pouch.
By the way, when you give the worm to troll you can go back and pick another one forever. Using this i earned 25 points
You need to get the flint from the troll's pouch, perhaps try throwing something at the troll?
Do what Adventuron said. If he wants to play, try doing it when he has his back turned to you.
Incidentally, I've fixed that worm and scoring issue, but I haven't uploaded it yet.