At the password area type
BCDF or GYLM for Bonus levels
Bonus password found in Level 24, Warehouse of the Evil Dolls
Select "Password" on title screen.
Effect
Password
Level 25 with 10 victims
GYLM
Hear Sound Effects
When the LucasArts logo appears on-screen immediately press the L or R buttons. If you press L, you will hear a person scream. If you press R, then you will hear a dog bark.
Level codes
At the Password section use the following codes
Level
5=VHRV
9=PBGG
13=BFCB
17=BKYZ
21=VXBB
25=XYLZ
29=YLZD
33=WJQK
37=BZVG
41=BRPK
45=VLHX