Sunder Low-Life Infernalist Updated

Hi guys,
I came up with this build while I was trying to create a build as Infernalist to stay low-life all the time and going full crit to exploit both Pain Attunement and Grinning Immolation for big crit damage.
First I tried with physical spells for their high crit base but then I realized that there was a melee skill that could always crit....Sunder!
...so why not going full titan witch?

Build planner: https://mobalytics.gg/poe-2/profile/51198d69-eeb8-4fd1-a254-1e125b76c0d8/builds/24d3d4f8-bd4a-4980-94d9-512ef611c6dd

T17 Iron Citadel (lvl 90): https://www.youtube.com/watch?v=AE8fgp81Ilo

Here Sunder is hitting for 1-1.3m + ignite but equip is still not great (only +3 skill points on weap and noone on amulet) + I went for a cheap anoint (50% attack damage instead of 60% crit bonus) and don't have any jewel with crit damage (some good time-lost sapphire with crit damage bonus on small passives could boost the dmg alot).

How it works:

Offensive

Since Sunder is always crit if fully broke armour is consumed, we go full crit damage to exploit the two juicy crit damage multipliers Pain Attunement and Grinning Immolation.
Resonating Shield breaks armour fast and easy in a good area around.
Sniper's mark adds some crit dmg mainly for bosses.

Weapon set 1 is with 1h+shield to break armour (1h just to have a fast leap but 2h can be good for more melee skill points to break more armour even if it's not really needed)

Weapon set 2 is for Sunder. I still have to try to go dual wield with two 2h maces for more dmg on bosses (a bit risky).

Defensive

Build is pretty tanky. It has 90% max fire res + more than 60% armour and with Altered Flash 20% frost/lightning is converted into fire and 20% physical into Chaos. Since it's a full strength build, life is over 3k and with Atziri's Disdain and Beidat's Hand energy shield can easily reach 4k/5k.
With Rise of the Phoenix + some passives the build achieves a huge amount of life reg during Sunder (stationary state) and with Zealot's Oath it is converted in ES reg.

notes:

For now I took double 3% increased life in the ascendancy but if some good spirit gems come in future another 25% life can reserved to get a big amount of spirit.

Upheaval support on Sunder can be used if more aoe clearing is needed.

Sunder can be also used with ancestral warrior totem which will greatly increase the clearing speed at the cost of dmg (one less support gem + losing stats from weap, particularly crit dmg bonus).

Pros:
+ Huge damage and aoe clear
+ Tanky
+ Easy to play

Cons:
- Sunder is quite slow (2s+)
- Melee
- Maps with less recovery rate can be hard