How to make it to the end 6/6:

 
 
-Be patient!
 

 

-If you randomly are on the right yellow plane here, you can skip the green slime by falling down the hill!

 

-When you leave the ice field, don`t let the black marble hit you back!
 
-You simply need enough time here!

-You really made it? Haa-Yeeh!