For the first time in a while, AD had a really tough act to follow.
Steve: Oh my God, a mall Santa. I...I didn't see him. Is he... Stan: Dead? You were gonna ask if he's dead? Steve: I was gonna ask if he's ok! Stan: Oh, no. No, no, no. No, he is...he is dead. He is NOT ok. He will NEVER be ok. Because he is, say it with me...dead. You didn't say it with me.
So with FG going in one odd direction, AD went in a different one. Santa as a revenge-crazed maniac was a nice change of pace. And that was a hell of an epic fight at the end against Santa and his army of elves. I expected the whole thing to end in a dream sequence, but how about that? It was all real. That was the biggest surprise for me.
This is both brilliant and genre destroying. The barrier to entry for amateurs to do this was obtaining the copyright. By making this a second audio track to be played alongside the movie, you skirt the copyright issue.