Part 28

Super Mario Galaxy 2 Part 28 covers Prankster Comets like Speed Run and Daredevil, including strategies for Peewee Piranha and Digga-Leg.

To access the Prankster Comet, you need to deposit 9999 Star Bits with the green Banktoad on the ship. If you have completed the game before, your previous game file's status, including Star Bits, will transfer over.

The Perfect Run

This is a Daredevil Comet challenge, requiring you to complete a star level again without taking a single hit. There are no Checkpoint (an auto-save point you restart from on death) Flags (a marker that saves your progress). This is considered the hardest task in the entire game. It is recommended to use Chance Cube Lumas on the ship for plentiful 1-Ups. The strategies are the same as before, but in the first stage, spiked flying enemies replace Paragoombas. After defeating the 3 Boomerang Bros., use the Launch Star to reach Rosalina and collect the Star. There are no Green Stars for this challenge. To make it official, re-enter Bowser's Galaxy Generator in World 6 and defeat Bowser again in Bowser's Fortified Fortress (this makes it the third time). Watch the end credits and do not turn off the game. Your game file status will become Master of Galaxies, and your game file planet head will glow.

Prankster Comets

Prankster Comets start appearing around the time you gather 15 Comet Medals, sometime during World 3. They appear randomly in previously finished galaxies. The types of Prankster Comets are: Speed Run, Daredevil, Cosmic Clone, Purple Coin, and Enemy Romp.

World 1

Sky Station Galaxy

#1- Peewee Piranha's Speed Run

You have an ongoing time limit, starting at 20 seconds, which increases by collecting clocks along the way to finish the level, including the miniboss fight at the end. Missing clocks cuts your time. Head left and get a clock atop the green pipe, then take it. Backflip and get another clock on the mountain, then spin the crystal and drop to the roof, then use the Launch Star. Avoid the mud and get the clock on the rotating platform, then long jump upwards to a clock over the quicksand area. There is another clock in the middle area with the rotating platforms, then use the Launch Star. Collect all the coins on this planet, then fight the Piranha miniboss again to win the Star.

Yoshi Star Galaxy

#1- Spiny Rainbow Romp

You have 1 minute to knock out all 30 Spinies as Rainbow Mario. Get the Rainbow Star and start knocking. 5 are in the first area, then use the springboard. Explore the left side by the water, in the middle, behind the green hill, and around the right side. Avoid the mud as it slows you down significantly. You cannot go beyond the fence and mud borders. The Star is in the middle circular grass platform.

Spin-Dig Galaxy

#1- Digga-Leg's Daredevil Run

You need to refight Digga-Leg with only 1 health meter point. Use the same strategies as earlier, but systematically jump on the drill enemies he spits out to avoid getting suddenly hit. Do not stand in direct opposition to the drill, as you won't automatically jump on it. Defeat him again for the star.

Flip-Swap Galaxy

#1- Purple Coin Flip 'n' Sprint

You have 3:00 to get all 100 Purple Coins on this maze of blue/red switches. Get the coin ahead, then 1 on the left blue switch and long jump 2x for more on blue. Flip to red, long jump, then the ring of them and a 1-Up. You should have 15 coins. Go left for 2, then long jump past the electric barriers to blue for more. Flip to red and long jump to the far right side for more, then on blue and long jump. 2 on red, long jump to red by safety, then back up a bit for a couple more. After the circle of coins in safety, you should have 39. Head along red, then blue, avoiding the cannonballs' paths. You should have 52 with the next circle of coins. Flip to blue, then red, then blue again, and backtrack to avoid the cannonballs and get what you missed. Flip back and forth as it makes sense and jump over the electric barrier moving back and forth. At the next checkpoint with the circle of coins, you should have 79 coins. Head on red, then blue and over the electric barrier that moves back and forth. You'll come to the very last coin on the stationary block to get the star.

Bowser Jr.'s Fiery Flotilla

#1- Fiery Flotilla Speed Run

You have 2:00 to defeat Gobblegut. Use the same strategies as the earlier fight to win the Star.

World 2

Puzzle Plank Galaxy

#1- Purple Coin Shadow Vault

You enter the indoor area where the ? coin minigames appear. You have 1 minute to collect all the purple coins, which are set out in small groups with clones following you.