I've been messing around with a Barbarian Shaman build that can use 2 weapons if you want. It currently uses UA content so some groups might not allow it but noone I've talked to finds the RuneScribe to be OP. It's based around the diea of have a Barbarian that uses "Magic" without impeding his/her ability to use magic.
The basic idea:
Human Variant For Ritual Caster:Wizard for Find Familiar(A Spirit Guide) and Identify (This part could easily be changed out for a Forest Gnome build, which would actually be taking advantage of the Int bonus, or to a lesser extant a Stout Halfling build instead)
Stats-wise you need 13 in int/str (for mutliclass requirements) then just go Dex/Con from there.
Barbarian6 totem path (Aspect of the eagle at 6)
RuneScribe2 (Earth and Wind Runes to start for utility)
Weapon-wise you have lots of options. The different weapons take advantage of the different runes. Like bludgeoning weapons can use the earth rune to have chances at proning people without saves. I like to use a sling for this because you still get to use your dex as your main stat. You can feel free to run a rapier in your other hand (I like to think of it as a shortspear for a more barbarian look, still a finesse stabbing weapon) I know Shortspear and sling isn't two weapon fighting, but it does allow you to use either without penalty while wielding both at the same time. 9Thanks to the sling not having the reload property)
The wind rune has some nice utility and and a very interesting attack with knockback that is only limited by your sight range (Aspect of the eagle anyone?) Enjoy a 1-mile range attack that has a knockback component.
Overall this character Will have a very high defense, lot of resiliency and utility (Something a barbarian usually lacks). Damage-wise you will be middle of the pack for sure, but you damage will often have a bonus effect that will benefit you and your entire party. As you level, getting the fire and water runes will make you character even more useful.
After getting all five level in RuneScribe (aka Shaman) you can go back to barbarian or even more onto fighter or rogue. Fighting might give you more combat utility but rogue will make you a better scout/thief.