I felt bad for the knight... I barely aimed at him, and he was almost an afterthough the first round.
Like the one random tactical squad that was in range said "eh screw it" and got a single Melta pen and Krak grenade through the shield and took out 5 HP. Really didn't help that the knight completely missed both battle cannons shots on his one turn of being alive...
Just a real bad day for that dude.