Go back to Secret 2
If you look at below, your odds are pretty good. The ratio of forward and backward choices comes out well in your favor. They mostly filter down to one room at the end. And key detail, it might seem lucky that you ended up getting the boss key before you get to the boss door, but it's impossible to get there without it.
There is no correlation between the order listed and the color or direction of the warp. The order listed is just alphabetical.
