Super Mario Galaxy 2 (Switch) Playthrough 11: Bowser Jr.'s Mighty Megahammer

Before taking on Bowser Jr., Mario takes on some challenges in World 3, like rolling on the Star Ball in Rolling Masterpiece Galaxy, in Beat Block Galaxy, where Mario has to jump to the beat, and take on a few Prankster Comets before dealing with Bowser Jr. and his mighty Megahammer. As for the rest of the description, I recommend watching the full video before reading past this point of the description I finish World 3 in this video, not all of World 3, but I show the remaining galaxies, and starting it off is the Silver Chomp Grudge Match in Rolling Masterpiece Galaxy, this is unlocked after collecting one star from Freezy Flake Galaxy, this galaxy is where we meet up with Bill Board, where we get a tutorial on how to ride the Star Ball, and it is time to roll, and the planets there are based around art supplies, like paintbrushes and many others, the first planet has you find the key to open the glass cage to launch to another planet. The next one has an elevating platform with some Goombas, then turn the Flipswitches yellow, the next planet is on a wooden plank with Buzzsaws and Bob-ombs, and that is where the Comet Medal is, and then time to take on the Silver Chomp to make it to the end and get the Power Star. This one has a Speed Run challenge through the Prankster Comet where you must complete it in two minutes, and the wooden plank planet is replaced with a green planet with many holes and full of Bob-ombs. Then for the Hungry Luma, this one needs 1000 Star Bits, and it is unlocked after collecting your first star in Haunty Halls Galaxy. The main mission is Step to the Beep, and the galaxy is Beat Block Galaxy, the platforms are called Beat Blocks, they disappear and reappear after a set amount of time as they alternate between yellow and green, and it has some good music as well. Beat Blocks appeared in Super Mario 3D Land, as well as Super Mario 3D World. This galaxy makes use of Beat Blocks, and some enemies appear on them, like Octoombas and Goombeetles, the second path of Beat Blocks has the Comet Medal, and the final path has five Silver Stars. Then we get a letter from a Jibberjay, which happens after collecting your first Power Star from Beat Block Galaxy, so it is time to go back to Wild Glide Galaxy and take part in the Jungle Fluzzard Race, where you must win against five Jibberjays of different colours, and after collecting the Power Star, a Jibberjay boards Starship Mario. I take on some Prankster Comets, like the Fiery Flotilla Speed Run, where we must beat Gobblegut within 2 minutes. Next is Hightail Falls Galaxy, and the Prankster Comet is Hightail Falls Speed Run, where we have to complete it in 3 minutes, and you have to watch out for meteors while going through the course. Then it is time for Bowser Jr.'s Fearsome Fleet, where you need 28 Power Stars, so you do need to collect some from World 3. This galaxy makes use of Yoshi to eat Bullet Bills and shoot them to destroy glass spheres, then hit the level and ride the yellow platform, and this section has some Undergrunt Gunners that shoot Bullet Bills out, this enemy went from a boss in the first galaxy to a regular enemy. After breaking the glass sphere with the Bullet Bills, the next part has a Hammer Bro which you can beat with a Bullet Bill, break the glass cage to activate the level, and we come across some airships, the second one that has a Hammer Bro is the one with the Comet Medal. Then we find Lumalee and a Launch Star, which takes us to Bowser Jr., and takes us on with his mighty Megahammer. Megahammer is a massive robot that attacks with its giant hammers, which create shockwaves when they slam down. To beat Megahammer, you have to use Yoshi to eat the Bullet Bills and fire them at the blue orbs, you have to hit them twice to break them, two of which are at the front and one is at the back. Once all the blue orbs are down, the glass cockpit where Bowser Jr. is will be revealed, and you have to hit that to beat Megahammer, and this one can be tough as you need to have Megahammer slam down its hammers in order to hit Bowser Jr., and it is two hits to beat the boss, and we get the third Grand Star, and the only one in the game where Yoshi appears in the animation when Mario collects the Grand Star, and this unlocks World 4.