Zoness To Sector Z
In Zoness, if you shoot down all the spotlights on the stage, you
then go to Sector Z when you complete the stage.

Macbeth To Area 6
When you hit the last leg of the stage, shoot the 8 red pillars with
metal direction flags on them so they turn green. Keep a very careful
eye out for them. If you went to Zoness before MacBeth, Cat will come
and help you shoot the switches. At the end, where the switchboard
light is, a switch will appear. Quickly shoot it and the track will
move to the right. Now the boss crashes and dies giving you a 50 hit
bonus, and that takes you to Area 6.

Sector Y To Aquas
All you have to do is get a score of 100 or higher in Sector Y to get
to Aquas.

Sector X To Sector Z
In Sector X, keep left at all times. You will eventually hit an area
where you have to quickly destroy white gates to pass through them.
Destroy and pass through all of them to warp.

Meteo To Katina
Near the end of the Meteo Field, you should see rings made up of
triangles pointing inward. Go through one and you jet forward in a
barrel roll. Go through all of them and it will make you go fast
enough to warp to Katina.

Sector X To Titania
At the end of Sector X, shoot the head off the boss. When he starts
to fight you again don't shoot him, dodge him, and let Slippy come in.
He will get hit by him and fall to Titania. Kill the boss and Titania
is your next stage.

Sector X To Macbeth
At the end of Sector X, shoot the head off the boss, then shoot at
the thing that was under his head to kill him as fast as you can so
Slippy doesn't try to kill him if you kill him fast enough you will
go to Macbeth.

Corneria To Sector Y
In Corneria, when Falco is being attacked by three ships, help him by
killing the ships. When you get to the water part with the rock arches,
go under every arch. Then head right into the waterfall. Falco will
guide you to an alternate boss, which, when defeated, takes you to
Sector Y.