Thorns is one of the 23 available perks that currently exist in Deep Rock Galactic. It can be unlocked on the first row of perks and there are 4 tiers; each tier requiring 2 / 5 / 8 / 11 perk points respectively for a total of 26.
Perk Table[edit source]
|Icon||Tier 1||Tier 2||Tier 3||Tier 4||Description|
|6 damage||12 damage||18 damage||24 damage||Any time an enemy hits you with a melee attack it will itself take 6 / 12 / 18 / 24 damage.|
Thorns has an internal cooldown of 0.75 seconds.