[pjalne]

In Starry Slopes it's in the fortress, I think. Or was that in Colossal Classics? Or the Wood one. Anyway, you have to collect all the coins in the level until you come to an arrow made of coins. Collect those, and then return to the beginning of the level. No, wait, I'm pretty sure that IS Starry Slopes.

The one in Colossal Classics I'm not sure about. What's the hint?