For infinite lives type "DRINN" as your password and use the following key
during play:

'BACKSPACE'-----------Skips to next level
'F1'-------------------Gives you a shield
'F2'----------Gives you nine firecrackers
'F3'------------------Gives you nine keys
'F4'--Gives you nine ultra sound whistles

LEVEL CODES

B-"DRACO" | F-"PALET"
C-"ATIKH" | G-"MIURA"
D-"FIRAM" | H-"SLORY"
E-"LURNA"