Dracula telling the Brotherhood Paladin why his prayers are in vain,
Dracula: I was like you once. But your God showed me another path. That's why the power of your God cannot destroy me... Because I am His chosen one!
Let that get into your head. The Prince of Darkness, the Lord of Shadow, Enemy of Mankind, and greatest Creature of the Night, is God's bloody Champion!
He then proceeds to carry out arguably the most awesome cross melting aura in all of fiction. Drac seizes the Paladin's crucifix and mockingly invokes his Latin rites. Cue the subsequent explosion which wipes out the Brotherhood's entire army. Vaporizes Bernhard Castle. Devastates Europe and can be seen from space! Leaving nothing left but ashes of the fallen and the Prince of Darkness holding the now red-hot melted cross with a somewhat wistful look on his face. Holy... Shit!
A Blood-possessed Medusa tries to turn Dracula to stone with her legendary gaze. Our protagonist wears a look best described as: "Bitch, please..."
Near the end of the final battle against Satan's first acolyte, the monstrous daughter of Satan charges down our hero. What does he do? Run? Hide? No, he countercharges the giant monster while drawing his Void Sword. Bad Ass doesn't describe it.
For sheer creativity, the theater production and subsequent boss battle with the Toy Maker.
Victor and Dracula temporarily escaping from Abaddon by doing a mirrored dive through the library skylights.
Then there's the part where he collapses a floor by punching it, with his unarmoured hand. He doesn't even leap that incredibly high before landing the blow. And then there's the part where he and Dracula survive the fall into the catacombs. That fall must've been hundreds of feet. It's no problem for Dracula to survive the fall, but Victor is pure human, albeit an extremely Badass Normal human. He doesn't even seem bothered by it.
Dracula, (on the verge of defeat,) tricking Nergal Meslamstea into entering Castlevania by luring him down a shadowy corridor, effectively de-powering the second acolyte by a huge degree and rendering him vulnerable to a satisfying beat-down.
Another for the fact that the Forgotten One's powers can create landscapes and creatures as well as destroy them, while all Satan and Zobek can do is corrupt and twist pre-existing forms of life.
Gabriel's epic Breaking Speech to Alucard, after killing half a million men... It doesn't convince his son; but give Carlyle props for the delivery.
Dracula: The roots of evil run deep. Irreversibly so in the heart's of men. It is their true nature. Their destiny... I was their most devoted warrior. A Champion of Light. But I fell. Fell into darkness, and now... I am feared, as The Prince of Darkness. Ironic? Don't you think? The mighty Zobek hides from me like the scared rat he is! Even Satan himself is too afraid to leave the pits of Hell and fight me! But if I die now, Alucard. They will simply take my place... Evil, will prevail. It is the natural order. The world... (Holds up Ronceval's crucifix.) Is like this. (Snaps the relic in half and casts the pieces down.) Abandon, all, hope.
After their fight, Satan tries to mock Dracula saying he wouldn't kill Alucard again just to kill him. Gabriel tells him "you don't know me Satan" than brings the cross down. Satan, believing that Dracula is serious, flees Alucard's body….which is just what Dracula wanted. Dracula than grabs him by the throat, pins him against a gate and impales him with the combat cross, killing Satan once and for all.
This version of Dracula is by far one of the most action and athletic-oriented Draculas ever. Whether he's facing down legions of mooks by himself and coming out on top, to doing insane shit, like leaping out and off of a moving train that's about too crash into a cavern wall, this Dracula is the ultimate undead action hero, on top of being a scary bastard. This is a Dracula who doesn't let all of his minions do all the hard work. This is a Dracula that reminds us that he's a warrior first and foremost. Being a God of Evil is just a secondary benefit.
Fight alongside both your son, Alucard/Trevor in his disguise as the Lieutenant and your descendant, Victor Belmont against hordes of Possessed, before Victor sacrifices himself to draw out Nergal.
Dracula performing a bullet drop against Abaddon, the finisher has Drac punching the Chief of Demons in the face so hard it launches his huge form through the air as if he were a measly doll!
Honestly, all of the Cutscene Power to the Max moments count. Including but not limited to... Dracula absorbing the Gorgon's Chaos flame breath to activate a fraction of his awesome powers; previously seen in the pre-rendered E3 announcement trailer. Gabriel summons a swirling kaleidoscope of shadow energy with a freakin' Dragon maw on the end and uses it to rip out the behemoth's heart and hold it over his head!
In Revelations, Alucard has to retrieve Dracula's weapons from the castle, which has hidden them in places Drac'd never be able to reach, and put them where Drac finds them in the main game. When Alucard retrieves the Void Sword, he uses it and his own blade in Dual Wielding to kill the monster who had it.
The final duel with Zobek's bodyguard also counts. Alucard has the bodyguard beat in raw skill, and when the bodyguard tries to heal, Alucard uses his wolf form to pounce on the bodyguard, finishing him off.