Be Undead

If you die, you will turn into a zombie.

Being a zombie has many disadvantages, but don't worry, you can be turned back by using a weakness potion and a golden apple.

I challenge you to play through the game while being a zombie.

You can play in your modified skin as a Zombie:

Features

You can play as:
-Zombie
-Drowned (when you die under water)
-Husk (when you die on sand)

Zombies only have one inventory slot with the armor and offhand slots, but you can right-click a chest to get access to the rest of the hotbar. (This can be modified in the config)

They can only gain experience through killing.
If not wearing a helmet or being a husk, zombies will burn in sunlight.
Drowns can swim and breath under water.
For zombies, healing/harming potions are inverted and the smite enchantment does additional damage.