I should also look into any user reviews or testimonials about using AggressiveKitty's simfiles on Simfileshare. Are they well-received? Do they have a large following?

I might also need to mention that when simfiles are shared, they should comply with copyright laws, so if AggressiveKitty is the creator, that's fine, but if they're remapping others' music without permission, there could be issues.

AggressiveKitty is a name I might be familiar with in the music or gaming communities. Maybe it's a content creator, a musician, or a beat mapper. I should verify to see if there are any known associations. A quick search in the Osu! community might show that AggressiveKitty is a producer or mapper known for creating intense or high-difficulty maps.