Ok, I wasn't expecting "every" enemy to be a reskin of a castlevania enemy. Forgive me for my listmania and laziness looking up their proper names. Castlevania in all but name indeed.
Monkeys = Hunchbacks
Bone Creatures = Skeletons
Winged Demons = Harpies
Dullahan Heads = Medusa Heads
Lance Armor = Spear Guard
Demon Dogs = Black Panther
Vampiress = Carmilla