The following solution (or walkthrough) can be copied and pasted into the BBC Micro port of Dog Star Adventure (in cheat mode), which is available to download at https://bbcmicro.co.uk/game.php?id=4504 S D S E E N GET BLASTER GET AMMUNITION GET TAPE S W GET FUEL W N U DROP FUEL D N N CSAVE TAPE GET PLANS N SHOOT SCIENTIST GET TURBO GET DEVICE GET I.D. S S S U DROP DEVICE DROP TURBO DROP PLANS D DROP I.D. S E E S W SHOOT GUARD GET COMMUNICATOR GET SCHEMATIC GET KEYS N PRESS BUTTON S E N W W N U DROP COMMUNICATOR DROP SCHEMATIC D S E E S D N GET HAMBURGER S READ GRAFFITI U N S GET MAP N U D S OPEN DOOR S DROP KEYS GET PRINCESS N W FEED ROBOT N U S GET CAPE W GET NECKLACE W N W W N U DROP PRINCESS DROP NECKLACE DROP CAPE DROP MAP D GET I.D. N W W D GET GUN U W N E E E SAY SECURITY SHOW I.D. GET CRYSTALS W W S U DROP GUN DROP I.D. DROP CRYSTALS GET COMMUNICATOR SAY SESAME N PRESS BUTTON