Originally Posted by Kordanor
Of course you can have seen it all back then - in one playthrough. But in this case you must have used a guide/walkthrough which also points you to every dungeon which is not relevant to finish the game.
And while people exist who have seen it all, I am pretty sure that the vast majority of players have only seen like 70% or less of the original game. If they finished it at all. Of course, that isn't of any help for you unfortunately.