Assemble a means of transport and have the pig onboard cross the finish line. Look around the level before assembling, as you may find additional collectibles! Remember that the more parts are used to construct the vehicle, the heavier it gets. Therefore, ensure proper acceleration and weight distribution, as those will impact the way to the finish line.
You can have the pig cross the finish line with an undamaged or destroyed vehicle; the goal is to have the Piggy cross it.