Little Big Planet 2 Walkthrough - Chapter 1: The Final Test
Full Walkthrough: http://www.gamefront.com/little-big-planet-2-walkthrough/
The so-called "Final Test" is actually a fairly simple boss fight. Basically, it all breaks down to flipping and pressing switches.
Start off by grabbing hold of the two switches to the left and right. Be careful of the yo-yos that the boss drops.
After you hit the first two, jump on the platform that rises and wait for the red button to appear. Jump on it and get ready for the next phase.
Next, the boss will essentially perform the "Walk the Dog" trick with the yo-yos. You can avoid them simply by jumping between the planes. Flip both switches again and then press the red switch when it appears.
The next phase is largely the same, except now you have to worry about bounce pads. Just make sure not to jump into them when a yo-yo is above you and you'll be fine.
Hit the switches again and you'll be given a grappling hook. Use it to pull down the two switches and use the grapple points to avoid getting hit by the yo-yos.
Once you get the two switches to turn green, a final flashing grapple point will appear. Grapple it to complete the level.
Full Walkthrough: http://www.gamefront.com/little-big-planet-2-walkthrough/