I'm just about done with my current character, might come back to him, but I want to do an Alik'r build next. My current was actually supposed to be an Alik'r, but then I decided to go with heavy armor + two-handed instead. My issue is that they don't wear armor, and I have a tendency to charge headfirst into the middle of everything, which works when I'm covered in steel plate. I already know to do a Redguard with a scimitar (or two), and the Alik'r clothes, but what about defense? I never thought I'd miss the Unarmored skill this much.

Dual scimitar
Light armor
Block
Sneak
Destruction

That's more or less standard redguard build: they're proficient with swords and some are also excellent spellswords.

I use dual scimitar and switch to 1h or sword + spell according to the needs. Since I wanted a pure warrior I didn't invest in ranged weapons complementing with destruction when needed. Since the redguards prefer to be lightly armored and are excellent scouts, i gave them the bonus of being able to sneak and kill quietly with a blade.

I have tried many kind of Alik'r builds. It's my most favorite builds so far. This is what I think is the best :
- Dual-Scimitar or if you on PC, there are few good curved swords in JaySus mod.
- Only wear clothing. Without any armor. My favorite was Hammerfell Grab or Ragged Trousers.
- Alteration Spells. This is your first line of defense.
- [Optional] Enchanting. If you feel too weak, you can use Fortify Health or/and Health Regen as additional defense.
- [Optional] Alchemy. If you feel overpowered and seeks more challanges, leaves armor, alteration, and enchanting. And only uses potions as your protection and defenses.

You can use Archery or Destruction spells as additional offensive.

Here's the skills :

Hope it's helps.

Most important are:
One handed (blade)
Alteration (dual casting no armor bonus)

Others I would suggest are:
Archery
Block
Sneak

Curved Swords...