Halfling, Paladin of Freedom 2/Ape Totem Barbarian 3/Pyrokineticist 8/Horizon Walker 7
ACF: Whirling Frenzy
Terrain Masteries: Desert, Underground, Mountains, Plains, Hills, Shifting, Cavernous
1- Point Blank Shot
3- Wild Talent
5- Power Attack (Ape Totem bonus feat)
6- Precise Shot
9- Improved Initiative
12- Endurance
15- Improved Precise Shot
18- Iron Will
In 28-point buy, I'd go for something like (after racial adjusts):
Str 10/Dex 18/Con 12/Int 10/Wis 10/Cha 14
At level 6, when she first gets the Fire Lash, without any items or buffs, her 15' Fire Lash attack is +6 to hit with a ranged touch, 1d8+11, or she can rage for 2 attacks per round (+4/+4). It gets better as she gets more BAB to sink into Power Attack and grant her iteratives. So, not game breaking, but decent.
OR, we could look at an evil version.....
Human, Psychic Warrior 2/Wolf Totem Barbarian 2/Fighter 1/Pyrokineticist 10/Blackguard 5
ACF: Whirling Frenzy variant
Feats: PBS, Precise Shot, Psionic Shot, Precise Shot, Power Attack, Improved Initiative, Psionic Meditation, Improved Trip, Improved Sunder, Cleave, Divine Might, Improved Precise Shot, Ability Focus (Heat Death)
For a level by level breakdown...
1. Psychic Warrior1- Point Blank Shot, Psionic Shot, Precise Shot
2- Fighter1- Power Attack
3- Barbarian1- Improved Initiative
4- Psychic Warrior2- Psionic Meditation
5- Barbarian2- Improved Trip (Wolf Totem bonus feat)
6- Pyrokineticist1- Improved Sunder
7- Pyro2-
8- Pyro3-
9- Pyro4- Cleave
10- Blackguard1-
11- Blackguard2-
12- Blackguard3- Divine Might
13- Pyro5-
14- Pyro6-
15- Pyro7- Improved Precise Shot
16- Pyro8-
17- Pyro9-
18- Pyro10- Ability Focus (Heat Death)
19- Blackguard4-
20- Blackguard5-
For 28-point buy, I guess I'd go Str 13/Dex 16/Con 13/Int 8/Wis 10/Cha 14.