This is a sensational production designed to provoke and shock and to get people out of their comfort zones and see the very real possibilities they could go to hell.
The alien bit is hyperbole, drama and sensationalism.
The rest of the message is showing secular trends in civilization that are definately not part of the Kingdom of God and warning people that if they are caught up in them then they are at risk.
I think it was rather amateurish. But the message is valid with respect to how many millions, if not billions a people are focused on secular aspects of life, even many/most calling themselves Christian and that many or most will go to hell unless they put to death the desires of the flesh and start living as Christians.
It is using fear as a motivator to get people to repent. But Jesus just spoke the plain truth about hell being real and how “few” find the narrow gate and the “many” enter the wide gate that leads to hell. I won’t make a judgement on the methods used by the production but its clear to me that somone believes that the scare tactic is justified with respect to the many who will land in hell for eternity unless they change. It will turn some people off to Christianity and lead some inclined toward Christianity to despair but it may also provoke others to start reexamining their own lives as well and repenting.
Bottom line - the alien threat to civilization is pure drama (complete with background music for dramatic effect) but the general message that all are personally accountable to God for how they live remains very real. Whether God looses His wrath to correct an unrepentant world tomorrow or in 10,000 years is inconsequential. What is important is that each of us tries our best to live according to Christian principals. Scaring others by provoking others with fear is not really Christ like. What is Christ like is impressing others by the dichotomy of how we love one another and offer hope in a world hell bent on self destruction and indifference and disrespect to the emotional, spiritual and intellectual dignity of our fellow man.
James