Health Indicator (Achievements-friendly)

(no player.json)
(no experimental)
(achievement friendly)
(join discord for feedback)

Disclaimer: the images used are only to give a visualization of what it feels like to use this add-on.

Health Indicator allows you to detect mob health, making your gameplay more RPG-like.
With Health Indicator, you can survive Minecraft Hardcore or other challenges more easily. If a mob has a lot of health, you can run away, but if you feel capable, you can choose to fight it.