you technically don't need to have Livesplit for multi-level categories, since you're kind of expected to go back through the recording and time the run yourself. Livesplit can be inaccurate sometimes too.
if you do insist on using it though, download the file https://www.speedrun.com/ultrakill/resources/ij9lr here, open Livesplit, and import it as a template. from there you can edit the names of the splits and do whatever customisation you want :3
Come one, come all, the day of reckoning is here! The ULTRAKILL speedrunning scene has grown from its humble singular channel and is ready to spread its wings in a server of it's own! Attached is the link to the server, and a link will be on the speedrun.com page for anyone you may know that wants t