Thorny

The Thorny is encountered in the Ossuary. One appears as an elite key guardian in High Peak Castle, occupying the green room.

Behavior
Attacks by rolling in a ball towards the player, dealing contact damage and knock-back. Dodge roll through their roll attack and attack them when they get out of their ball form. It can also be parried if timed correctly.

If you attack these enemies with a melee weapon while their spiked back is facing you, you will take damage. Not all melee attacks will trigger this (such as whips). This makes the Assassin's Dagger dangerous to use on them.

A downward slam attack on these enemies while cursed and using the "Mario Jump" modifier will cause you take damage and die.