Neftusk Bossfight Bug?

[Heart in Flowers]

I'm not sure if it's bugged or working as intended but when I fought Neftusk, he did nothing but stay in his start position while I went around and destroyed the altars.

The turrets showed up after destroying each but they have abysmal targeting range so I basically killed Neftusk without him moving or attacking at all, and my Techpriests were relatively undamaged even without Curatio equipment..

Is that how the fight's supposed to go or is he actually supposed to move and attack you?

[Ruinae Retroque Rursus]

If you leave him alive for the final boss fight he scampers round and swings at you, so it's maybe unintended?

Netfusk is a bit of a joke otherwise.

[Heart in Flowers]

He literally just sat in his original position and didn't move. He was untargetable by melee too so I thought something was happening but guess not.