Can't Touch This - Permastun Marauder (Cheap build - 1 Exalt)

Ice Crash will be you main ability. Two things make this build great; increased AOE and Reduced Enemy Stun Threshhold. I currently run 130% reduced enemy stun threshhold(REST). With the amount of REST I have I am able to do a very small amount of damage to stun bosses, mobs, and exiles permanently. The increased AOE allows you to hit ranged mobs so you rarely have to move. Concentrated effect enables me to achieve the damage I need to stun bosses, so we want to be switching increased area of effect for concentrated effect before boss fights; of course, for some bosses it's not needed if you do enough damage. Below is a list of required gems:

Offensive Gems List:
Increased Area of Effect<>Concentrated Effect
Stun
Endurance charge on melee stun
Melee damage on full life
Melee physical damage
Ice Crash

Defensive Gems List:
It's up to you! If you need help look at my gear :D

Aura List:
Hatred<>Determination

This setup will allow you to stun bosses while maintaining good defenses; of course you can always change whatever you wish, but this is what I run for tempest.

80 point to permastun early - POE builder Passive Tree

105 point - Official POE Passive Tree

123 point - POE builder Passive Tree

72 point - POE builder Passive Tree

Of course the Tabula Rasa is what makes this build so cheap. You REALLY want to get a 6L high armor/life/resist once you get the currency; this build will let you get that currency pretty quick.

The gloves are not required, you can use any good rare gloves.

Permastun Example on Voll
Check out some map runs via twitch/13ouncer

For tempest I go for life, damage and +1 Endurance Charge, but it's really up to you.

You can stun your way to victory
Cheap gear
Good Damage
Upgradable
Great Map Farmer
Great Boss Farmer
Makes You Feel Like A GOD!

Unwavering Stance (its not that bad, just be mindful)