Super Cheats

Go to password screen and type

Triangle(4), X, Square, Triangle(4), Square, X, Triangle, O, Triangle(3), O, Square, Triangle, x(4)

If done correctly you will have 100% completetion (cannot save)

If you want to save type in

Triangle(3), Square, Circle, Square, X(2), Square, Circle, Triangle, Circle, Square, Circle, X, Circle, X, Circle, Square(2), Circle, Square, X(2)

If done correctly you should have 98% (all but 1 gem)

For 95% type

Triangle(3), Square, Circle, Square, X(2), Square, Triangle, Square, Triangle(2), Square, Circle, X(2), Square, Triangle, Square(2), Circle(2), X

If done correctaly you should be at levle The Lab with numerous missing gems

For 85% type

Triangle(3), X, Circle, Square, Triangle(2), Circle, X(4), Triangle, Square, Circle, Square, X(3), Square, Triangle(2), Square

If done correctaly you should be at levle Castle Machinery (befor brio) with numerous missing gems

With all of these codes you should have the 2 keys to secret levles as well (im not sure about the 85% one.)