So first of all this is highly spoilers, PLEASE don't read if you didn't play the first Castlevania Lords of Shadow or Mirror of Fate, again I am going to spoil alot of story elements, here we go:
First of all, Alucard told Simon that the Mirror controlled him, that his actions were controlled from the start, but who ?!, who controlled his actions using the mirror ?!
Why did the castle crumble after Dracul defeat ?!, I mean this isn't exactly old Castlevania, as far as I can remember there is no connection between Dracul and the castle, heck it belonged to Carmella before, and others before her.
Why wasn't Dracul killed by Simon ?!, Alucard said that isn't the way a vampire would die, so how come he didn't die ?!, something feels missing.
Personally do you think Dracul went easy on Simon and Alucard ?!, we all know this Dracul was very much human and a very passionate man once, he defeated Trevor like it was nothing, he was able to knock off Simon with so much ease, I have a feeling he decided to die that night knowing that he can't be killed, rather than take the life of another of his kin, you ?!
I guess that's all for now, I may update later with more questions :D