Enter the Password screen

1. Enter square,triangle,circle,cross,circle,triangle
   to enter cheatmode 

2. Ignore the invalid password warning and exit the 
   Passwordscreen.

3  Enter the Passwordscreen again and enter one of 
   the following:

   square,circle,circle,square,triangle,cross : gives
   unlimited shield

   or:     

   triangle,cross,triangle,triangle,square,circle  :
   gives invisibility.

Exit the passwordscreen again and either start a new
game or enter it again and enter a levelpassword.

Sadly the cheats won't work if you load a game :(


Happy Gaming...
Raptor of Syntax