I've been playing F2P for around 2 months now and, after playing with a couple of build ideas, I've basically settled on this. It's a 28-point build used to rush EXP and favor to accumulate TP. I've found that DPS oriented melee lends itself to fast levelling and rushing. If this was a 32-point build the only thing I could see changing would be to bump the WIS up to 12 for a gain of +2 will saves. Terribly low AC is compensated partially for armor with damage reduction and guard properties such as an Adamantine Full Plate of Acid Guard.

* Build goals: High DPS, Big stunning blow DCs, decent saves...designed for taking down groups of mobs.

Code:
Character Plan by DDO Character Planner Version 3.10
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Zonker 
Level 20 Neutral Good Human Male
(12 Fighter \ 8 Barbarian) 
Hit Points: 420
Spell Points: 0 
BAB: 20\20\25\30\30
Fortitude: 19
Reflex: 6
Will: 8

                  Starting          Feat/Enhancement
                 Base Stats          Modified Stats
Abilities        (Level 1)             (Level 20)
Strength             18                    27
Dexterity             8                     8
Constitution         16                    18
Intelligence         10                    10
Wisdom                8                     8
Charisma              8                     8

                  Starting          Feat/Enhancement
                 Base Skills         Modified Skills
Skills           (Level 1)            (Level 20)
Balance               1                    10
Bluff                -1                     1
Concentration         3                     4
Diplomacy            -1                    -1
Disable Device        n/a                   n/a
Haggle                1                     1
Heal                 -1                    -1
Hide                 -1                    -1
Intimidate            3                    22
Jump                  8                    31
Listen               -1                    -1
Move Silently        -1                    -1
Open Lock            n/a                   n/a
Perform              n/a                   n/a
Repair                0                     0
Search                0                     0
Spot                 -1                    -1
Swim                  4                     9
Tumble                1                     8
Use Magic Device     n/a                   n/a

Level 1 (Barbarian)
Feat: (Human Bonus) Power Attack
Feat: (Selected) Toughness


Level 2 (Fighter)
Feat: (Fighter Bonus) Two Handed Fighting


Level 3 (Fighter)
Feat: (Selected) Stunning Blow
Feat: (Fighter Bonus) Weapon Focus: Slashing Weapons


Level 4 (Fighter)


Level 5 (Fighter)
Feat: (Fighter Bonus) Weapon Specialization: Slashing Weapons


Level 6 (Fighter)
Feat: (Selected) Improved Two Handed Fighting


Level 7 (Fighter)
Feat: (Fighter Bonus) Cleave


Level 8 (Fighter)


Level 9 (Fighter)
Feat: (Fighter Bonus) Greater Weapon Focus: Slashing Weapons
Feat: (Selected) Improved Critical: Slashing Weapons


Level 10 (Fighter)


Level 11 (Fighter)
Feat: (Fighter Bonus) Greater Two Handed Fighting


Level 12 (Fighter)
Feat: (Selected) Iron Will


Level 13 (Fighter)
Feat: (Fighter Bonus) Greater Weapon Specialization: Slashing Weapons


Level 14 (Barbarian)


Level 15 (Barbarian)
Feat: (Selected) Luck of Heroes


Level 16 (Barbarian)


Level 17 (Barbarian)


Level 18 (Barbarian)
Feat: (Selected) Toughness


Level 19 (Barbarian)


Level 20 (Barbarian)
Enhancement: Fighter Attack Boost I
Enhancement: Fighter Attack Boost II
Enhancement: Barbarian Damage Boost I
Enhancement: Barbarian Damage Boost II
Enhancement: Barbarian Extend Rage I
Enhancement: Barbarian Extend Rage II
Enhancement: Barbarian Power Attack I
Enhancement: Barbarian Power Attack II
Enhancement: Barbarian Power Rage I
Enhancement: Barbarian Power Rage II
Enhancement: Barbarian Frenzied Berserker I
Enhancement: Barbarian Willpower I
Enhancement: Barbarian Willpower II
Enhancement: Barbarian Willpower III
Enhancement: Kensei Falchion Mastery I
Enhancement: Kensei Falchion Mastery II
Enhancement: Fighter Critical Accuracy I
Enhancement: Fighter Critical Accuracy II
Enhancement: Fighter Kensei I
Enhancement: Fighter Kensei II
Enhancement: Fighter Strategy (Stunning Blow) I
Enhancement: Fighter Strategy (Stunning Blow) II
Enhancement: Fighter Strategy (Stunning Blow) III
Enhancement: Fighter Strategy (Stunning Blow) IV
Enhancement: Fighter Falchion Specialization I
Enhancement: Human Adaptability Strength I
Enhancement: Racial Toughness I
Enhancement: Racial Toughness II
Enhancement: Barbarian Constitution I
Enhancement: Barbarian Constitution II
Enhancement: Fighter Strength I
Enhancement: Fighter Strength II
Enhancement: Fighter Strength III
Enhancement: Fighter Toughness I
Enhancement: Fighter Toughness II
Enhancement: Fighter Toughness III
Enhancement: Fighter Toughness IV
Assuming a +5 STR item and a basic +5 Falchion and while raged, frenzied, and with Power Attack on:

Hit Points: 460
Fortitude: 19
Reflex: 6
Will: 13
STR: 40
CON: 22

Stunning Blow DC: 10 + 15 STR mod + 6 enhancements = 31
Attack Bonus: 15 STR + 2 Kensai2 + 3 Feats + 5 Weapon - 7 Barbarian Power Attack 2 + 20 BAB = 38

I don't know anything about damage formulas so I won't even try to feign knowledge in that topic. Maybe someone could post a reply. Does anyone see any glaring holes in this build? Any ways to make it better?