Ummm....bullets???!! *spoilers*
*spoilers below*
How the heck can bullets hurt Delia and Alexander anyway??! Damien had to be killed with special ritual daggers, and only the daggers.
I am surprised the filmmakers did this.
But then, the doctor does make it clear that Damien is the 'whole, the power' so maybe he and the Devil are the only ones invincible to earthly weapons?
"I'd say this cloud is Cumulo Nimbus."
"Didn't he discover America?"
"Penfold, shush."