Full Weapons
To start with all weapons, enter the password "BGWPNS".
Infinite Lives
For infinite lives, enter the password "BGLVS".
Invincibility
For invincibility, enter the password "BGGRLY".
Level Select
To start on any level, enter the password
"MNCHT".
Torch Your Enemies
To get the flame thrower, go up the first staircase, get next
to the bookcase on the left, then go behind it so you can't see
your guy anymore. It will transport you into a room. Go out the
door and you'll be outside. Go down and to the left and right
next to the building will be a FLAMETHROWER. To use the flame
thrower, go to the box with the pistol on it. The first thing
shown when you go on it is now the flamethrower. Now, ROAST 'EM!