Enter any of the following for the password:
"ZXSP"---------LEVEL 2 | "LVFT"--LEVEL 3
"LTUS"--INFINITE LIVES | "ESPR"-----????
"LUCY"----------HEARTS | "SOTB"-----RAIN
"SNOW"------------SNOW
If you typed "LTUS" use 'F8' to pause the game and press 'F6' and then the fire button to skip levels. 'F2'-'F7' selects the various super weapons.