Troll Marsh Level G3, Billy Goats Gruff, is part of the “Goat Side Quest“. To unlock this level, you must retrieve the goats in the previous level, Angry Goats. Our strategy is to cut the bottom-right block of ice, then the left. As the ice swings, cut off a piece to knock the treasure chest over. Save the goats while you’re there as well. Then cut the top bridge at the far right. For par, cut both the bridge and right ice block simultaneously.
If you have a different strategy for completing this level feel free to leave a comment below.