Hey! You there! Yes, you! Some guy made a level, his name's Keut-66! "What level?" I hear you wonder. Well it's called "Crazy Rush !" it's an endless survival challenge, pictures can be found at this here link:
http://vita.lbp.me/v/gk210
Anyway, play it! It's a great level with not many plays. Not as much as it should have anyway. He always updates too! With perhaps a couple more features, and most of the time, he puts in new sections that can appear at any time!

So why are you still reading this? PLAY IT! You won't regret it!

EDIT: 4th spot on the cool pages on 14/01/2014

I really love survivals! It's already in my queue Thanks for the recommendation, by the way.