Looking for help building a demon hunting barbarian.

[thorin001]

This is for PFS.
Guy is from Mendev and absolutely hates demons because of the Worldwound.
Here is what is written in stone about the character:
Half orc with the Shaman's Apprentice alternate racial trait (Endurance feat)
1) Barbarian- Extra Rage
2) Barbarian- [World Serpent Totem]
3) Barbarian-
4) Barbarian-
5) Barbarian-
6) Barbarian- [World Serpent Spirit] retrain Extra Rage to Extra Rage Talent [World Serpent Totem Unity]
7) Horizon Walker- FT Underground
8) Horizon Walker- FT Abyss, Terrain Mastery: Abyss
9) Horizon Walker- Terrain Dominance: Abyss (weapons count as cold iron)
10 Horizon Walker- FT Urban, Terrain Mastery: Underground
11)Horizon Walker- FT Hell
12) Horizon Walker- Terrain Mastery: Hell, Terrain Dominance: Hell (weapons count as silver)

I already have 1 Two Handed Invulnerable Rager, so I am looking in a different direction for this guy.

Any suggestions are greatly appreciated.
Thanks.

[avr]

World Serpent Totem Unity has a prereq of Barbarian 10. You won't qualify, certainly not at 6th level.

Demons often have SLA's. Have you considered going the spell sunder (& maybe supporting rage powers like strength surge) route?

[Deadmanwalking]

Lesser Celestial Blood makes your attacks count as Good while you're Raging and you do an extra 1d6 vs. Evil Outsiders, so that's a good option for an anti-Demon Barbarian.

I'd take that instead of the World Serpent line, along with Superstition and one of the other (better) lines of Totem Powers.

[Anger Nogar]

World Serpent Spirit is a bit of a wasted power provided you are probably going to have a holly weapon and most if not all things you are going to fight before lvl 12 are going to have DR/material OR good and after lvl 12 you are going to ignore cold iron and silver DR. It also gives a resistance bonus to alignment based effects, but that is a bit too situational, so you can be better served by the superstition rage power that gives bonus against all spell like, supernatural effects and spells.
Avr also brings a good point since your narrow antidevil/demon specialization wont help you at all against their spellcasting cultists and minions.