I got attacked at the Castle by 10 or so Super Mutants. It was awesome, one of the coolest experiences yet. I have the holes filled, so the main entrance in the only way to get it. They came down the path that leads to the main gate. 2 shotgun turrets in the hall and 5 heavy turrets on the wall. All of my settlers ran up on top of the wall to shoot down at them. Dogmeat ran out the front door like a boss. Cait fell off the side and started using melee. I just sat back and watched the carnage, fixing turrets when I could look away from the epic battle.