Unlock all stages in stage select: Press F9+F10+N on the title
screen to unlock all stages.
Level Editor: WARNING. The editor is extremely non user friendly.
It was made entirely for me to build the levels with. If you want to
play around with it, expect crashes for trying to access sprites
that don't exist etc.
From stage select, highlight the stage you want to edit, and
press '=' (from main keyboard next to backspace) and E. This will
open the editor. Holding H will provide some basic information. Some
things to bear in mind:
* You are working with the actual level file, you might want to
make a backup of any level you edit before you do.
* You'll notice a big pure red square sprite. This needs to be
placed on steep slopes to overrides a problem with the games
engine, load a level to see how its done. Without it, its possible
to jump through a slope if you're running fast enough
* You can't edit the size of the level (where the screen stops
scrolling) and you can't see where the boundries are from the
editor, its all hard coded.
* Bosses are also hard coded. You can't make any change to where
they appear etc.
And I'll say again, the editor is completely unofficial, I'm
simply making it available for people who want to have a mess
around. It's not easy to use and you will see crashes (I can work it
because I wrote it and know the bounries)