When you find a treasure chest in a level added by Goblin Menace, you get the message about finding the usual reward (poem or picture) and a secret map piece. Does finding all of them do anything? ...
Trine 2 Goblin Menace has added an achievement called "Off You Go", to get which one must catapult a goblin trapped in a Monster Prison. Where can one find a catapult to get this achievement?