This is the 3rd time I've tried typing this. And it's infuriating. I hate mobile sometimes.
So. Ceraza is her real name, but amnesia plot. Standing at 7 foot 6 inches tall, Bayonetta is a centuries old Umbra Witch. Bayonetta and other Umbra Witches specialize in Bullet Arts. A style of combat that allows the use of all 4 limbs that specializes in gunplay and melee attacks. It also gives her efficiency in any weapon she picks up, and she has many. Too many for me to go through on this phone. But a lightsaber called Pillow Talk, a Scythe that sucks the soul from it's victims called Shuraba, and of course her trademark and favorite weapons: the supernaturally powerful handgun set called Love Is Blue.
The backbone of her fighting comes from her Wicked Weaves. In real world history, Witches have always been associated with seduction and long hair. Ceraza embodies this. Her entire skin tight outfit is actually her hair. During combat her hair extends from her body (leaving her almost mouth wateringly naked) for magic, most notably to summon the limbs of Madama Butterfly. Umbra Witches make pacts with demons to gain strength and Madama Butterfly is one of the strongest. Portals open up with giant fists and high heels coming down to crush an opponent. Though its a demonic pact, it's implied that they're actually friends. Bayonetta can rely on Madama in a fight. During an Umbran Climax (yes, that is on purpose) Madama can get even more involved in the fight, to the point of being outright summoned- something only the most skilled witches can pull off.
On her own Bayonetta can kick an oncoming military jet into the sky, throw a sattelite from orbit, and dodge point blank gunfire (that's moving at 1,700 mph). And if she dodges an attack, she slows time to a crawl with Witch Time, allowing her to dismantle an otherwise well guarded opponent. She has smaller, less used abilities like Cryokenisis, being able to highjack and control vehicles through magic, and all manner of ridiculous bullshit. When serious, every attack she throws summons the strength of her Infernal Demon and lays waste to what's in front of her, becoming nearly unstoppable. She's highly durable, and high endurance.
She has the power to take on the forms of animals for flight and damage negation. She also can walk on walls and the ceiling with Witch Walk. Her torture attacks allow her to summon iron maidens to kick her opponents into. (Angels be fucked)
That all being said, Bayonetta is 100% human and reliant on her magic, demon pact, and skill to enhance her.
But when you're arguably the most powerful and skilled witch in fictional history, being human is an after thought.