ok here you have it: The most messed up level in the game. Grant086 said everything in his solution. This seems to be mostly based on luck, since the flying blocks seem to have no pattern whatsoever. His hint to watch out for the small little rocks was the best hint ever in this situation. It is the only way to make this a little bit predictable. So whenever you see these small rocks don't try to jump, cause it will get you killed.
Also the big blocks from the lower part of the arena will most often fly directly to the buttons. So stay clear of them.
For the second part, all I can say is: good luck and may the force be with you. It took me 2 hours to get through it. There are no checkpoints and whenever I made it through one difficult part another followed. And the rocks flying around make this extremely frustrating.
I can just advise you to watch the video below. Watch it and try to remember what you have to do at a specific point and most importantly where to go. You don't want to make it through the first half just to try to go up when instead you have to go down.
One last thing: DO NOT let go off your gamepad when the credits roll. There are 7 more rings to grab. If you miss one of those you have to go through this hell again.
Good luck and good nerves!
(video credit: Magor115)
Hope this helps you guys :-)
Any improvements? Please let me know in the comments below!