03-11-2011, 12:11 PM
Spoiler alert (text is in white; highlight it to read it.)
When gold bricks are on, Jack can use the vine to jump into the middle level to pull the lever which opens the gray door blocking the red key. There's a secret passage on the upper level which Jack can jump up to when the silver blocks are on. If he takes that passage to the room to the right, there's a lever in there that will change the gold/silver blocks if necessary.
When gold bricks are on, Jack can use the vine to jump into the middle level to pull the lever which opens the gray door blocking the red key. There's a secret passage on the upper level which Jack can jump up to when the silver blocks are on. If he takes that passage to the room to the right, there's a lever in there that will change the gold/silver blocks if necessary.