I see. So if we had no weapon, does it mean it's a stealth game?
Yeah the gameplay in mind is a survival horror that can be played with a Master System controller.
You start off with a holy cross and when button 1 is held you can hold it up which can sort of "harm" or at least paralyze vampires but will slow your movement if continued use.
Or you can hang your cross on a door which would make that room inaccessable by vampires (unless it has another entrance) but at the cost of being unarmed.
Perhaps there are two other holy crosses that can be found throughout the game, but there's also lock doors that require keys and perhaps other puzzles that need to be done. But you need to get the Master Key which Dracula keeps in his room in order to leave the castle.
I was gonna make this game as a Master System like game but never got round to it.