Detect if there are any instance of any obj from Family ?

I have a Family that contains ALL the different enemies in it.

Before the player can end the stage, I want the player to kill off every single of those different enemies that are part of a single "Enemy" Family.

Is there a way to detect if there are Zero instances of any object from within the family on stage hereby confirming that all enemies are destroyed ?

Check Enemy.Count = 0

Thanks !