The Fire Bros. don’t just have secret hideouts, they have a fort! Take the Fire Flower from the start and toss some fireballs throw the Clear Pipes to take out the Fire Bros. that toss fireballs through themselves. Slide on through and repeat this action to take out the Fire Bros. then safely collect Green Star #1 from the center of the H-Shaped Clear Pipes. From here start leaping across the small islands where you encounter a Fire Bro atop a Goomba Tower. If you ground pound the ? Block here you’ll be launched high into the air where the Stamp is found and now can easily jump on the Fire Bro.
With this section clear take the Warp Box to the Checkpoint Flag . Nearby is a Thwomp that you need to ride up to the second level, there is also a set of invisible blocks that will do the trick. Enter the pipe at the end of the ledge then guide the ball using well-timed jumps so that it hits the P Switch revealing Green Star #2 .
Head back through the pipe then continue to run along the upper level to obtain a Green +Clock then drop down so you can get the Fire Flower . Toss some fireballs through the pipes then chase after them to a platform with a Green Star Ring . Collect all the coins for Green Star #3 then ride the pipe to the final area.
Defeat the Goomba Towers with Fireballs to make the Warp Box appear so you can reach the Goal Pole.