Hey guys,
Can someone suggest or link to me a build to do Colossal Ancients in Hardcore?

First time i try them, any suggestions will be appreciated!

Smiter

Do you have a build guide?
Warlock is not used anymore?

Look for Uber smiter build on Max roll

As warlock you risk getting nuked.

Ok thanks I will go for smiter!!

even my somewhat well geared smiter got nuked a few times on softcore yesterday when i decided i would help someone with their ancients cuz why not i could do it fine in old patch

half way through i remembered to take off my sunder

ouch! Which build did you used?

Si yes also helps to know what updates were made for the ancients:

Colossal Ancients
Colossal Ancient Statues now drop from non-Terrorized act bosses at a reduced rate.
Colossal Barbarian summons continuously spawn, up to a cap of 5.
Increased the Magic Resistance of each Colossal from 50% to 75%.
Increased the damage of Talic’s Whirlwind.
Increased the damage of Talic’s Fire Twisters.
Increased the damage of Korlic’s Cold Fissure.
Increased the damage of Madawc’s Thunderstorm.
This was all a necessary change as the Colossal Ancients were a breeze before this patch. This is no longer and if your hero is not prepared, be prepared to die a lot. Stacking resistances will be very important for this fight now.

I did a bunch of smiter runs today on softcore. Some on p8. It would work totally safe on hardcore unless you d/c.

Grief, dracs, guilluimes um, guardian angel um, phoenix (can use spirit or hoz or exile), maras, dwarf, raven, gore, torch, anni and full of res charms.
You want almost 300 res in fire, cold, lightning because -100 from hell -100 from ancients.

Prebuff with fade, basically just for DR since your res already maxed.
Prebuff with BO of course.

Make sure you WALK, not run. Running is when they can destroy you since no defense and 1/3 block.