3 golems

This build will not do 151 fast untill you level up 3 versions of the golem spell past 80, so you may not want it, but its ABSURDLY tanky.

catalyst and pistol/dagger

3x Mage golem
Mark
Anomoly
any other ability (I prefer plagueburst, but bulwark or annihilation, or parasite will work)

Put all your stats into vitality

In the tree, get the "two ailments" on the tree.
Get the Minion stuff in the one cluster on the tree that has it.
Get as much defense as possible on the tree, resists, block, etc

Playstyle:
Agro a pack of mobs
Double anomoly to inflict curse and stasis
Use your second spell (plaguebearer for me)
Mark one of them (Mark is VERY STRONG right now)

Golems kill the marked one,
The whole pack dies

Move to next pack

The only skill you need is to Mark a mob that will die soonest in the pack.

If you have the belt that auto casts Mark, so much the better.
I don't and I am cruising with this build.

Why is it so tanky?
Well, you dont put much of anything in the skill tree that is offensive, so more than usual defense on the tree.
You put all your points into Vitality.
And...AND....the rune on the golem spell, that directs a portion of damage you take, to the golems....IT STACKS WITH MULTIPLE GOLEMS.
With 3 golems out, all absorbing a portion of the damage you take.....you are effectively invincible.

P.S.
Anecdotally....according to some peeps testing things.....nothing buffs minion damage except spell level, so your golem damage will be a bit low at first, until you can level up the golem spell

It's going to be tough to progress with any build without great gear @ 151+, but here are some of the best guides I have found so far:
https://www.reddit.com/r/Wolcen/comments/fbzhs3/new_player_whats_the_best_most_overpowered_built/fj7sltj/