Necramech fight can last 4 minutes, 3 minutes of that it can be invulnerable

[PainTako]

I have made a video and timed it to see how long a Necramech can be invulnerable for. I wanted to see how a player who doesn't abuse a certain mechanic, in solo would fight this boss. It seems atrocious. Yes, I know you can Octavia it. Yes, I know you can zenurik void blast slow it. Yes, I know you can use x mechanic to make it easier. I think a boss fight should not rely on specific mechanics to make it not annoying. Like the title suggested, I spent a 4 minute boss fight with Necramech, and for 3 minutes out of the 4 I fought it, it was invulnerable and would kill me if I attacked it. In those 3 minutes all I could do was run away as it tried to kill me.