Cheat Codes & Level Codes:
Hold down these keys:
Y + D + [F9] -- Choose Level.
X + J + T -- Extra life.
[F3] + [F5] + [F9] -- 500 secs. more.
Level Codes:
CORROD
FISHER
GOGONO
EXTERN
XFILES
GOTERR
SPECTR
PICNIC
POILUS
FEDODO