Beat this on original NES, and I in fact still have my copy. This game, ghosts and goblins, and the megaman series were the shit. Was it hard? Absolutely! But just like the Dark souls franchise figured out, difficult meant rewarding. I pretty much never use online guides until I have already beat a game at least once…

You can have as many keepass databases as you desire, all with different master keys. I agree, never store all of your passwords in one place.