Enter the revolving bridge room, let Iggy pull the iron ball, and let Luigi go up to vacuum the windmill and take the road. Because the left bridge will move 360 degrees and the right bridge will be stuck directly above, after the left bridge falls, the blower will take the road. (Iggy can go to the acupuncture terrain below to get gold coins and treasure boxes)

When entering the place where the cart is placed, push the cart to the position where Yiji blocks the mechanism, and make the cart on the left visible with dark light, so that the cart can be pushed to block the mechanism.

Enter the final arena for a BOSS battle, illuminate it with strong light at the moment of its attack, then suck it with a sucker, shake it from side to side, and break his armor. After repeating it three times, he will fight with a shield and a sword. At this time, just wait for it to attack, and attack hard and straight. After the war, I got the elevator button on the seventh floor.