[Damien_Azreal]

The Octaking is the most challenging boss fight in the game.
But really, it only seemed unfair on Insane.

I've never played the game on Piece of Cake, so I'm not sure. I've played on 'Let's Rock' the most. With one play through on 'Damn, I'm Good'.

Once you get the Octaking's health about halfway gone he stops bringing in Octabrains and makes it much easier to just unload on him.
And with the Octabrains... pipe bombs make quick work of them. As does the Freeze ray.