To skip directly to the final room, enter the password AAAABLFJSIMON. Once here, you have two choices of action depending upon the ending you wish to see:

Normal Ending::
Move Left, Left, Left, Left, Down, Up, Left, Left, Right, Right, Down, Left, Right, Down, Fire, Right, Up, Down, Fire, Down, Fire, Fire, Fire, Fire.

Alternate Ending::
Move Left, Right, Right, Down, Left, Right, Down, Fire, Right, Up, Down, Fire, Down, Fire, Fire, Fire, Fire.