Tough as Nails

Tough as Nails is a Barbarian passive skill unlocked at level 30. Increase Armor by 25%. Increase Thorns by 100%.

Effect

Increase Armor by 25%.
Increase Thorns by 100%.

After a while the scars serve as their own layer of armor.

More Barbarian passives

Pound of Flesh
Level 10

Ruthless
Level 10

Nerves of Steel
Level 13

Weapons Master
Level 16

Berserker Rage
Level 20

Inspiring Presence
Level 20

Bloodthirst
Level 24

Animosity
Level 27

Superstition
Level 30

No Escape
Level 35

Relentless
Level 40

Brawler
Level 45

Juggernaut
Level 50

Unforgiving
Level 55

Boon of Bul-Kathos
Level 60

Earthen Might
Level 64

Sword and Board
Level 66

Rampage
Level 68