Take the money and go in. Call the receptionist and buy a coin. Go north and west and insert the coin in the coffee machine. Take the coffee and go east, and north. Ask the engineer for the code. He gives you the high code (random). Go south, south, east and east. Give the coffee to the manager. Ask the manager for the code. He gives you the low code (random). Go north and take the floppy disk. Go south, west and north. LOGIN with the low and high codes. Open the door and go in to the secret bunker. Take the magtape. Go out Go south, west, north and east. Insert the floppy and mount the magtape. Go west, south, east, north. LOAD the shutdown routine. RUN the shutdown routine. You've saved the world!