Super Mario Galaxy 2 Walkthrough

#1

Bowser Jr.'s Mighty Megahammer

This level would be a lot more difficult without your dinosaur pal. Yoshi is able to grab the Bullet Bills with his tongue and then spit them out as deadly missiles. You can only aim at enemies and objects on the same level as Yoshi, but you can always jump and fire your Bill from the air. Break the first barrier -- the large glass globe -- with a regurgitated Bullet Bill to proceed.

Hit the switch with Yoshi's tongue (ignore the electric enemies unless you need health -- they can be stomped for a coin) and hop onto the moving platform. Redirect Bullet Bills as you travel to the left on the platform. You can take out the gunners and the spheres filled with star bits.

Flip the switch on the far right and hop on another platform. Stay to the right and use a Bill to take out the cannon on the right, followed by the barrier. A launch star is on the far side. Hop over the Bullet Bills and then use the flower pegs to reach the adjacent platform. Backtrack and grab a Bullet Bill to bust out the switch.

These platforms spawn infinitely, so don't worry about leaving one behind as you explore the ships that show up for star bits. You can collect a free Life Mushroom between the ships. Take out the Hammer Bro. on the second ship and grab the Comet Medal to the left.

Break the final barrier and you'll find a launch star, Luma shop and midway flag. Prepare yourself for an epic boss fight!

Bowser Jr. / Megahammer

Bowser Jr.'s mech suit has two conspicuous blue orbs on its chest and one on its back. These are the mech's weak points and they must be destroyed with TWO Bullet Bills a piece. The front side is easier to damage than the rear.

Simply swallow a Bullet Bill and aim for the blue globes. After a direct hit, the mech will recoil, preventing you from damaging it temporarily. It should fire another volley of Bullet Bills soon after.

Once you destroy the front orbs, stand near one of the launch stars in the area. If you need health, have Yoshi gobble up a rock to make a coin appear. Grab a Bullet and immediately use the launch star to land at the mech's rear. As soon as you land, jump and float using Yoshi's flutter ability to avoid the laser ring. Spit out the Bullet before it overloads and you should score a hit.

Do this one more time -- you'll need to return to a launch star -- to send the mech into a frenzy. You need to hit it two more times, but the weak spot is now at the top of the massive mech. To hit the "head," you need to wait for it to bend down. At this point, you still need to jump to get a shot into it. You may even need to shoot a bit early and anticipate its "duck" maneuver.

You'll be dodging double laser rings now, but luckily you can stay right in the center and flutter-jump over both with ease. Hit it two times in the "head" to bring it down for good. You can use the launch star to reach the Grand Star.