I loved the graphics, and the music, felt very much like Castlevania, but man, it was unfair generally.
The fact that Dracula could spawn on top of you was what really made this bad, in fact, it's not so much that he could, it's just that you had no way of telling when. Besides that the ideal fighting mechanics would've worked out. (still very hard to hit the man without trading hits)
So there were two main bugs, if you held down attack, you'd infinitely hit with nothing, until you were damaged. The other one was you could get suspended in air until you jumped again, making you impervious to damage. Combining these two creates a soft lock. This version of the game seems to have had that happen less than the others.
So what can I say, you made a true NES replica, unfair, buggy, but still kinda fun.
PS: I found out to beat him most effectively, stay in the middle block, as he can't spawn completely on it, making you not take as much unfair teleport on you damage, and you can get to the guy fastest from that position. If he spawns on the edges of the screen you're gonna wanna dash jump and attack towards him, if he spawns rather close you'll want to be about a block away and then jump and hit. Still not a sure fire way of doing it though.