Solution from John K. Barnsley, played on the Amstrad

The start location is random, but often E - North is the Oak Door

From the Oak door... E-E-TAKE BLOWLAMP-E-N-N-N-N-N-N-N-TAKE COAL - W-TAKES HOVEL - E - S - S - E - KILL TRIFFID - (with blowlamp) - DROP BLOWLAMP - N - N - DIG MOUND - (to (ind an amulet) -TAKE AMULET - S- S- S- S- S- S- DROP COAL - TAKE HAMMER - S - S - W - TAKE FLASHLIGHT - W - W -W-W-W-W-N-W-N-TAKE LIGHTER-W-N-E-N-W-N-E - N - W-N-E-N - E-TAKE KEYS-W -W-N-TAKE FLUTE-S-E-S- W - S-E-S - W-S-E-S-W - S-E-S - E-S-E-E - E-N - OPEN DOOR - (with keys) - DROP KEYS - FLASH ON - N - N - READ SIGN - N - PLAY FLUTE - E - N - W - N - E -TAKE BOOK - READ BOOK - DROP BOOK - N - TAKE REVOLVER - E - TAKE CLOCK -W-S-W-S-S-S-E-S - E - N - TAKE CUE - EXAMINE CUE - DROP CUE - (password) - S - DROP FLUTE - W - TAKE PISTOL - N - W -S-S-E-E-E-N-E-S-S-W-W-W W-W-W-W - W- W- SHOOT DOG - SAY ’NO' - DROP REVOLVER-TAKE CORPSE-N-E-N- W-N-E-N-W-N-E-N-W-N-E-N-W-N-E-E-E-DIG GRAVE-DROPSHOVEL-W- W-W-S-E-S- W-S- E-S-W-S- E-S-W-S- E-S- E-S- E-E-E-N-N-N-N-E-N-W-W-W-W-N - TAKE GLASS - N - DROP CLOCK - TAKE BATH PLUG - S - S - S -TAKE FOOD -E-S - BREAK MIRRORS - (with hammer) -W-S - TAKE TRAY - E - E - DROP PISTOL - TAKE TURNER -N-E-S-S-E-E-E-N-N-N-NN-N-N - DROP HAMMER - S- S- S- S- S- S- S- W-W-W-N-N-E-S - DROP TURNER - N - TAKE BOTTLE -W-W - TAKE CIGARS - N - TAKE KIPPER - N - E -N-E-N-E-DROP BATH PLUG-W-S-W-S-S-E-N-E-THROW KIPPER - (at Bonzo) .

Scoreword= CUE. (Carry at the end: Food, Amulet, Cigars, Claret, Tray, Glass and Lighter).