I changed my mind... I'm releasing a DLC soon. I'll reply with a link to download it when it's finished. The name will be Herobrine Hunting: The Entity's Eclipse.
Try to hit the Herobrines, make sure not to hit any creepers! · By
Go to https://brickninja.itch.io/herobrine-hunting-the-entitys-eclipse to see the DLC, it's unlisted though so you can't find it from search & browse.