You're body can absorb sunlight for substance and healing, if you spend 4 hours in direct sunlight you do not have to eat for that day, in addition when you spend 1 or more hit die during a short rest in direct sunlight you regain additional heath equal to the proficiency bonus to your constitution.

When making a unarmed attack you can deal 1d8 + your strength modifier instead 

Using your bonus action you can expell you're spines and within a 10 ft radius all creatures take 2d8 and add 1d8 for every level

Resilience against fire damage, in addition you can't gain exhaustion from heat and only require 1 gallon of water per week

You're body is covered by spines that naturally grow from your skin,you can retract or expose these spines with a bonus action.while spines are out any thing you grapple takes piercing damage equal to your constitution score