Where was the sticker in 6-5?Cubes are easy as piss to find, you would almost have to be going out of your way to NOT get them. Those gold stickers though, they are hidden pretty well for the most part.
6-5 is the last gold sticker I'm missing, its like a boss rush stage with a jet flight part. Any hints where to look?
Found it, it was in such a hidden place you would never think to look.