Green Star #1
It’s hard to miss this Green Star; it’s on the roof of the very first train car next to your start.
Conkdors and Bullies try to hold you up in this section. Don’t get shoved off the tracks—at this point it’s fatal!
Green Star #2
You’d have to try to miss this Green Star Ring. Just be careful with the spiked pendulum swinging over this train car as you collect the Green Coins. Try to grab the ring early so that you have enough time to gather all the Coins and the Green Star before they are scrolled offscreen.
Stamp
Reaching the top of this train car for the Stamp either requires you to use the Horned Ant Troopers and bounce off their backsides while they crawl down the wall, or use the Cat Power-Up to climb atop the train. You can also crawl inside of the train car, and ground pound a ? Block inside to extend a block tower through the roof and into the star.
Green Star #3
When you reach the very front of the train, you’ll find a pipe there guarded by a Hammer Bro and a Fire Bro. The passage being protected by the Fire Bro hides the third Green Star.
Boss Battle: Rematch with Pom Pom
Pom Pom creates more shadow clones right away, which is different than your last duel with her. Unfortunately for her, she still stands out among the clones like a sore thumb exactly as in previous encounters—look for the bright pink ninja star in her hands, and attack her before she and her clones all throw their ninja stars at you. If you’re fast enough, poor Pom Pom will not even get a chance to attack before you knock her out!
Once she’s out the game, warp to the Goal Pole zone and put this train ride to an end!