Wait. I'm getting a vision.
God of War (classic) spiritual successor about a vampire who wants to get revenge against Dracula and the rest of the high order of vampires. Her attacks are all weaponized blood like Skarlet from MK or Mira from KI. She has access to wolf and bat transformations for faster traversal and flight, her dodge is turning into mist, and every boss she beats gives her a new magic spell she can learn.
The defining aspect of the combat is the blood meter. The fuller it is the stronger her attacks. You fill it up by finishing off opponents (or civilians) with a bite to the neck (then a stake through the heart). If you let it fully deplete, any attacks you do drain your health. Blood sucking can also refill your health.
Edit: Tagging
Michael the Spikester
. He’d probably like this.