To begin, Mario starts off in the bottom right corner, on a platform above the layer of spikes. Heading left, he must simply jump over a gap and continue left to a moving platform, allowing him to jump on and ride over the remaining spikes. Now in the bottom left corner, Mario must climb up a couple of ladders and dash right across a layer of sand blocks, making sure to jump at intervals, as once he has the key on the other side, he is required to return in the same way and may only use the blocks he has left for himself.
Back on the left side of the stage, Mario must activate the highest block and place it in the gap between the platforms both Snipers are on. As the timer runs out and the block returns to its normal position, both Snipers should be on the other platform, allowing Mario to safely continue upward with the key. Mario must then toss it onto a higher platform to keep the key safe, return to it in time, and pick it up again. He must then simply carry it to the right, making a few jumps along the way, until he reaches the Key Door, which he is now able to unlock to complete the level.
Pauline's lost items
Within this stage, Pauline's lost items can be found in the following order and in the following places: