Level codes
Enter these on the password screen:

JUNGLEWAR
BUCCANEER
HAMMERHEAD
DETONATE
AFTERSHOCK
BLITZKRIEG
CHESSPIECE
NOMANSLAND
BASTILLE
LIGHTNING
UNLEADED
GUNSRUS
CHAINMAIL
ONETWO
APACHELITE
EAGLEEYE
CROSSEYED
OLDSCHOOL
DIGIT
SURFIN
SHARK BAIT
MAD BOMBER
CHEESYPOOF
MPH
PHOENIX
AVENGER
WARRIOR