Super Mario Galaxy 2 100% Walkthrough Part 3: Quite A Shocker

Yoshi's galaxy is taken over by spiky things! But it appears as if the cause of the invasion is a certain zappy critter. Going to the unlocked small galaxy, electricity is even more prominent thanks to the moving electric fences of doom. Watching the paths of things closely will get you through it all though!

Super Mario Galaxy 2 Menu:
https://pkgam.tumblr.com/post/170010676210/super-mario-galaxy-2-menu

Time Stamps:

-World 1-
Yoshi Star Galaxy:
-0:30 Spiny Control

Flip-Swap Galaxy
11:25 Think Before You Shake (Comet Medal collected at 13:28)

14:41 Star Bunny invited in

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Enjoy!