There are additional difficulties to the mod for those who want a challenge (or are nuts).

The difficulties with the affix "Hard", mean that your character will start with 20 Max Health, instead of 100.

The 1 Health for good Difficulty means that if you get touched, your character will visit guide in the underworld.

N Terraria 6

Now you can change the difficult at any time in the N Terraria Options, into the modes "hardcore RPG" and "capped hardcore RPG", that makes all enemies stronger.