Path of Savagery

While some use magic or other means to halt the destructive use of world-altering technology, some believe that the best way to defeat this foe is to know everything one can about it. These Barbarians research and learn what they can about the budding technology of the world, and then use what they have learned to keep this new threat in check. They are often misunderstood: These champions are not unintelligent; they understand the technology they hate, enough to judge that the negatives of such a thing-- Choking smoke, horrific explosions, the increasing ease in which massive amounts of life can be taken- Far outweigh the convenience of such things.

Techbreaker

The savage knows how to strike at the creations of mortal kind to deal maximum damage to these abominations of nature. She deals an additional 1d6 damage of her weapon's type every time she strikes a Construct while raging. This damage increases to 1d8 at level 6, 2d6 at level 10, and 2d8 at level 14.

Disruptive Blow

Starting at level 6, a Savage Barbarian has become so adept at dismantling technology, they can choose to purposefully strike an area of a target to disable optical sensors or auditory drives. Once per rage, you may declare your intent to attempt a Disruptive Blow. If your attack is successful, roll your damage die as normal: The result (without modifiers) is the number of rounds the target is blinded or deafened.

Weak Spots

Starting at level 10, you can identify weaknesses or openings in the design of a Construct and can wedge or otherwise force your weapon into these areas. You ignore a Construct's immunities to piercing, bludgeoning, or slashing damage (if they have any). This does not include resistances to non-magical forms of these damages. 

Technology's Bane

Starting at level 14, the Savage is now an enemy of all things manmade. Not only are you capable of breaking technoloogy: You are masterful at it. When you attack a Construct, you succeed in a critical hit on 19-20 and deal an additional damage die. If your Critical is already improved, it is improved further against Constructs. (So 19-20 becomes 18-20, etc).