When you get to Floor 8 (the diamond-shape level that moves up and down), look behind you right at the start. There’s a grey platform on the edge of the level. Teeter on top of it and carefully drop down to a platform below containing a secret goal that will warp you to Floor 10.

Now, here’s an even sneakier one! When you reach Floor 18 (the long circuit where you have to chase the goals), roll slowly from the start and head for the second arrow on the left hand side. Carefully roll off the edge and land on the level below. You will now be ahead of the goals, so turn around and wait for them to catch you up. The red goal will warp you to Floor 25.