Gods in the Machines
Robot Smasher (Barbarian Archetype): While most of your tribespeople keep their distance from technology, you seek to actively destroy the construct war machines of the Technic League. Without robot armies to enforce their will, the League will surely fall to your peoples’ might, returning your nation to its rightful rulers. This is a Barbarian archetype that gains greater ability to damage constructs. (Based on the Numerian Liberator)
3rd: No Defense: While you are raging, when you attack constructs, robots or clockwork creatures, your attacks ignore any damage resistances those creatures possess.
6th: Thick Skin: While you are raging, when a construct, robot, or clockwork creature causes you to make a save, you can add your proficiency bonus to the save, if you are not already proficient in it.
10th: Final Strike: You can choose to end your rage early. If you do, you cast shatter, using Wisdom as your casting ability and your proficiency bonus as the level of the spell slot, dealing both thunder and lightning damage.
14th: Robot Reaver: While you are raging, you double your rage damage bonus against constructs, robots, or clockwork creatures.