This video shows you how to get the skull that is hidden in Bad Piggies Tusk ‘Til Dawn Level 5-12. The skull is located under the final arc in the top-right corner of the level. Prepare to reverse your momentum with fireworks, or luckily flip the contraption like we do!
If you have a different strategy for completing this level feel free to leave a comment below.
I recommend putting the pumpkin outside the contraption. It will get lost somewhere on the way, and the vehicle will be much more likely to turn around.