Goliath of the night seems super bugged - One hits my build with every attack

Every time this enemy turns up he is an instant one shot to me. I am playing a champion with fortify, 60k armour, adrenaline (less physical damage taken) and this enemy one shots me with every attack.

I thought it might be a special mechanic but POEDB mentions nothing

He does not do the same to AI team mates. If this guy turns up I basically cannot win as I have to just run away from him the entire fight as 4 mil DPS is not enough to take him down quick enough

Is this intended as it seems crazy overtuned. He does overwhelm some phys mitigation but it seems like this might be setup wrong as nothing I can do prevents a one shot.

If it was big telegraphed attacks I would be fine but it is every attack.

I'm having a similar issue, definitely seems bugged.