Now this is just me but I think the idea of Satan some how becoming Dracula would be a downgrade of evil. I mean when it comes to evil Satan is the ultimate evil. Dracula is evil but nothing compared with Satan. Moreover, how do you kill Satan? I'm sure these things will be explained but it still makes me wonder.
So, The Lord of the Dead is Death? Also who is this reaper boss?
I know it was mentioned holy water is in this but are crosses, axes, or stopwatches?