Freezeflame Galaxy - Freezeflame's Blistering Core

Welcome to the Galaxy!
Mario
Once again, Noelle is our Co-Star. We land on the ring planet and get the Launch Star Chips in the crystals. We long-jump to the Launch Star once we have all five, but we can use the Pull Stars as well. We launch into a lava planet where the Freezeflame lava music plays. It looks like a bunch of ruins surrounded by lava. We backflip, wall-jump, and spin over the tall wall ahead of us. We could walk around it, but this way is a little faster. We get the ? Coin to make a Fire Flower appear. We light the torches on our side of the wall to make it go down. Then we light the torches to our left, dodging the urchins. We can set them on fire for Star Bits. If we get injured, we can't spin out the flames for coins. The area is so hot that the torch will relight itself. We get the Life Shroom under the tower near the other torch. We climb the tower and gravity flips us to the planet's "ceiling". The camera flips as well, so we see things right side up. We walk around platforms that will rotate us into the lava. We walk to an area where urchins come out of holes infinitely. Nearby is a door and some torches. We must use a nearby Fire Flower to light the torches, bouncing our fireballs off the lava. This is a little tricky and will take some practice to line up our shots correctly. Once we do, the door will lower and we'll flip once again.
This time, we see the Star behind a wall on the other side of a river of lava. The lava has a current that pushes platforms to the right. Also to the right, we'll find yet another Fire Flower. On either side of the Star are torches we have to light by bouncing fireballs off the lava again. We can use the floating platforms to allow us to hit it more easily. I died from the lava enemies in the area.
Take 2- I got the Star after lighting the torches and falling in repeatedly. Once the torches are lit, a platform extends and the door blocking the Star lowers. We hop on a moving platform and jump to the new platform to reach the Star.
Star Get #54, 2 Coins, 2313 Star Bits, 5 Lives

Luigi
This took me two attempts without a Co-Star. We get the Launch Star Chips, launch, lower gates with the Fire Flower, and flip twice. We use fireballs to light the torches so we can reach the Star.
Star Get #54, 4 Coins, 2889 Star Bits, 34 Lives