Enter the WOLF
password to begin a
game. Then, anytime
during gameplay,
hold down Buttons L
and R and pause the
game. A debug menu
will appear that
enables you to have
the flag in the
first building and
to play sounds from
the game.
Start a game and go
to the attack-craft
select screen.
Highlight your craft
and press Button C.
Hold down the top L
and R buttons. While
holding L and R,
press and hold
Buttons B and C.
Continue to hold all
four buttons and
press the Stop
button. This takes
you to the Exit Game
option. At this
screen, continue to
hold the four
buttons and push
Down on the
directional pad.
You'll hear a
confirming sound. Do
this for each craft
you wish to make
invincible.
Start a new game and
go to the
map-selection
screen. Keep
pressing Up on the
directional pad
until you reach the
Password entry
screen. Enter the
password WOLF. You
can now pick any
level in the game.