New Super Mario Bros.: 1-4

We're back outside and heading for the castle. There are a few pipes that produce an infinite amount of Goombas, so be aware of them. We slide down the hill to take out the Goombas. As we continue, we see a small green pipe. We can't go in it until we get the Mini Mushroom, which is in a nearby item block to the right. As Mini Mario, we can run on water and bounce higher, but can only damage enemies with a ground pound. The pipe takes us to a room with water. We run across the surface to the right and wall jump up and to the left for the first Star Coin. We exit that area and reach a vertical maze of blocks. There is a Koopa nearby that we stomp into its shell and pick up, sending the shell into the maze. The shell destroys the brick blocks and gives us access to the pipe below. The pipe takes us underground, where the second Star Coin is. We can't quite reach it, so we hit the last brick block before the pipe to the exit to make a P-Switch appear. This switch temporarily turns coins into brick blocks and vice versa. We run up the newly formed blocks to reach the 2nd Star Coin. The third Star Coin is past the maze. We have to run under a ledge while small or with a well-timed duck. Afterwards, go back left, then on top of the ledge to the right and continue onto the goal.