So this is more of a story-driven challenge than the legacy ones, the guidelines are going to be a bit looser. Also this challenge requires the Supernatural Expansion at a minimum.

Some sims have a healthy appreciation for the Supernatural. Your sim can see those sims in the distance, if they squint out from the rabbit hole they fell in. Because your sim wants to have one child of each occult type, and raise them to adulthood. At a minimum, that means a vampire, fairy, werewolf, witch, and ghost child. You can add more occults to the list based on your expansions, but may need the NRAAS portraitpanel mod, as well as supplemental mods like traveller if you want to get a mermaid.

Because there are no male witches in Supernatural, you'll need to either play as a male (with PJSims' Take Sims to Court Mod, or just letting your partner move in long enough to get custody), use NRAAS woohooer to allow same-sex pregnancies, or create a male witch and move them in in edit town.

This will be easier if you play as a female sim, to automatically get custody of your children. Supernatural fan is the only required trait. The other traits are up to your discretion, but don't make them too functional. This sim must start off living alone, and can only move in an adult if said adult is currently pregnant with their child.

You are not allowed to hire a babysitter for more than three hours, unless you have access to a mod that makes babysitters charge an hourly fee (and if you do, please link me to it). So your sim will have to work from home. Also, if your children are taken away, you fail. As I said, this is mostly-story driven, so you can use your discretion.
This is gonna be like golf, lower points are better.

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  For every trait that gives her a bonus to any skill other than charisma, add 5 points. For every detrimental trait, subtract 5 points.
  The 'par' for this challenge is 30 days to give birth to one of every occult, adding 4 days for every additional occult you are aiming for. Subtract a point for every day under par, add one for every day over.

If you have more ideas for ways to score this, let me know.