So, I made it all the way to the last skull-locked gate, and... I'm stuck. Really, honestly stuck. I didn't open the left-side silver gate on the floor of the third checkpoint so I missed out on the two silver keys you can only get from going that way so I have zero silver keys and one silver gate between me and finishing the game. fml orz Guess it's time to try the whole thing again...
 "Magirune"){kind=icon}