Brute | Pillars of Eternity 2 Wiki

 Berserker

Bonus:  Tenacious (+5 Might, + 2 Penetration) and  Hardy (+5 Constitution, + 2 Armor Rating) are the Inspirations. 
This replaces   Strong (+5 Might) and  Fit (+5 Constitution) Inspirations.
Gaint 30% Hit to Crit conversion on melee and carnage attacks while frenzied.

Penalty:  Confused status inflicts -5 Intellect and turns all Carnage attacks into Friend or Foe, resulting in friendly fire. 
Players also take Raw Damage at the rate of 2 Raw Damage every 3 seconds for 15 seconds, -10 Deflection. Cannot see Health when frenzied.

 Corpse-Eater

Bonus: Gain the Ability Flesh Communion, target a hostile deceased  Kith, Wilder or Beast to devour their corpses.
Flesh Communion also heals for 50 Health and grants +3 Rage and Barbarian Resources.

Penalty: All Rage abilities increase in cost by 1.

 Mage Slayer

Bonus: Successful melee weapon attacks (or Carnage Hits) add Spell Disruption to the target, causing wizard, priest, druid, cipher, or chanter spells to have a chance to fail when cast. Gain +5% resistance against Spells.

Penalty: Cannot use Potions or Scrolls, -50% beneficial effect duration. Passive Spell Resistance affects Friendly and hostile spells.

Black Jacket

 Bonus: Start with an additional Weapon Set and Weapon Proficiency. Reduced Recovery time penalty by 1s when switching weapons.

 Penalty: Loses Constant Recovery.

Devoted

 Bonus: May select a single Weapon Proficiency as their chosen weapon. Increased Penetration with their chosen weapon (+2). Increased Critical Hit damage with their chosen weapon (+25%).

 Penalty: Accuracy is penalized whenever using a weapon that is not their chosen weapon (-10). Only gain a single Proficiency and no new Proficiencies during level up.

Unbroken

 Bonus: +1 Engagement. Increased Penetration on Disengagement Attacks (+10). Gains "Shield Mastery" providing bonus Armor Rating while wearing a shield (+1).

 Penalty: Lower Stride in combat (-10%). Lower Reflexes (-15).