In the final season of LOST, John Locke is brought back to the island dead. By doing this, the smoke monster of the island becomes an exact double of him; it's not the actual Locke, but instead it is wearing his face. This is similar to how The Dark Presence is using the form of Alan Wake's double, Mr. Scratch.
Near the end of the film, the sun rises and burns away all the vampires, with Seth and Kate, who are low on ammo. This is just like every time you play a Fight 'Till Dawn game.
Seth sarcastically once said that psychopaths don't explode in sunlight. In the game, Mr. Scratch, who is also deemed a psychopath, actually exploded in the light of the film projector, and not the sunlight at all.
Barry makes a reference to Milli Vanilli when Eddie Rodman wonders why The Anderson Brothers sound different between their singing voices and speaking voices. Milli Vanilli were known to have performed with vocals that were not their own.