Trine 2: Complete Story is the latest version of the game, including a total of 20 levels from the main campaign, plus the expansion Goblin Menace and the secret level Dwarven Caverns.
It's a blast using the Leviathan Axe, and levelling up the weapon via a Dwarven blacksmith allows you to pour experience points into a fairly robust skill tree to give you even more options in battle.