After looking in a bewitched mirror, a schizofrenic superhero suffering from anterograde amnesia must defeat her super vilan alterego in ten nightmares in order to not wake up as evil reincarnated.

You may have thrown just a few too many elements into your cocktail.

This is confusing.

The MC is a schizophrenic, a superhero, and an anterograde amnesiac (had to look that one up just to understand what it means) - which one is the MC's defining characteristic?

On top of the MC's description being convoluted, the fantasy/supernatural genre lacks specificity - it involves superheroes, magic, and demonic elements.

I suggest you pick the one most appropriate description for the MC, and narrow down the genre to the most relevant such as; angels and demons (Constantine), magic (Harry Potter) or plain old (fill-the-gap) super-hero guff.

Rutger,

Wouldn't you want to build up your hero within a normal world first before you throw all these mental obstacles for him/her to conquer first?

The good side is that you have established a worthwhile goal already. Just nothing specific about the hero.