Face rigging is still in pretty early stages, so it's just mouth, brows, and basic eye open/close.
Tattoo is custom painted, based on a few different references. There's no actual 'canon' design for the tattoo (hell, there are some cinematics where Kat doesn't even have a tattoo), so I kinda just winged it.
The hair rigging is pretty rough. Honestly, the hair geometry in general for kat looks pretty bad compared to most other champs', regardless of how well it's rigged.
I have a personal theory that she was one of the first Wild Rift champs modeled, and Riot refined the hair modeling techniques since then.
Alternate dl: https://www.mediafire.com/file/9w3tiihiahb7tt4/kat_wip1.7z/file