Fridge Brilliance: Why does Gabriel rename Trevor Alucard when he turns him into a vampire? He probably didn't know his name, Trevor never told him and the Mirror Of Fate doesn't seem to be capable of creating sound.
Fridge Logic: If Alucard doesn't need to breathe, why does he gasp for air when he comes up out of water?
Force of habit, perhaps?
Narm: Sometimes, the voice acting in 3DS version can get downright hilarious, such as during Simon's first encounter with the masked wraith.
Simon's motivation to find and kill Dracula springs from the death of his parents, which is pretty sad, but what makes it worse is that he actually reunites with both of them over the course of the game, and doesn't recognise either of them.
A lot of Alucard's backstory and dialogue with Simon is pretty tragic when you know who he is, especially when he asks Simon how his mother (Trevor's wife) died.
Trevor's death. Pretty much the whole scene, from Trevor's dying lamentations about the cruelty of fate and his pity for Dracula, to Dracula's desperate panic upon realising who Trevor is, through to his frantic attempt to save his son's life and his heartbroken reaction when he sees it's too late.
The Un-Twist: It's obvious from Alucard's appearance and dialogue that he's Trevor before the game's plot reveals that fact.
Win Back the Crowd: Some fans who hated the original Lords of Shadow warmed up to this game, in no small part due to its more traditional Castlevania plot and gameplay.