“Dead Trigger: Unkilled” (** out of four) was a mildly entertaining action melodrama about a mysterious virus that threatens to eradicate mankind and how a former soldier (Dolph Lundgren) is put in charge of recruiting a group of renegade sharpshooters and former criminals to stop the virus and stop the zombies which threaten worldwide apocalypse. Umpteenth derivation of both “28 Days Later” and “Resident Evil” and also “The Walking Dead” but Lundgren’s usual wooden performance is put to good use here and he’s well-cast and the movie at least never stops moving. Much better than most of Lundgren’s other direct-to-DVD schlock although film’s ending is a real letdown.