Trailer Script and Backstory

I want the trailer to be really mysterious so I wrote a passage of text to be spoken by one person, a sort of monologue which would reveal something about the world in which the film is to be set.

EXPOSITION
The Back-story in the film trailer is one of post-apocalypse and world-wide devastation. Shards of a gigantic alien object have been scattered across the northern hemisphere, turning the entire region into a desolate wasteland. The shards contained extra-terrestrial diseases which began to infect humans and also emitted an unknown radiation that mutated people into blood-thirsty creatures. Massive Evacuations took place in the past, to escape the chaos, and the number of humans living in the ruins of the old North is not very large. I like the term 'Autumn of Mankind' to describe the state of the world in this film. I have not thought much about a title yet, but would like a short catchy one with meaning and relevance to this plot idea.

PROTAGONIST
One of my favourite characters in film is 'The Man with No Name' from Sergio Leone's Spaghetti Westerns' portrayed by Clint Eastwood. The character in this film would resemble Eastwood in many ways, but instead obviously taking a futurist role, a post-modern angle. The film is not a Western, but may have some similar qualities - essentially it is an Apocalypse Film. The reason this character would be alive in this world and not dead like the rest could be for example that he was immune and found away inside one of the shards, which gave him powers such as increased strength and reaction time, which could also have changed his physical appearance. I don't feel that I need to show much about the main character in this trailer because it is going to be so enigmatic anyway - In the teaser for 'THE HOST', there is absolutely no implication to whom the protagonist is, in fact it is just a dialogue track running along a single shot of the Earth - Looks Nice, Sounds Interesting but is anything but revealing.

SCRIPT
-Opening Logo (TWENTIETH CENTURY FOX)
-Opening Logo (MIDNIGHT PICTURES)
-Enigmatic, shadowed shot of the protagonist, in an abandoned location of some sort.
-Close up Stock Footage of an Eye opening, or a low angle shot through some grass at the clouds.
-Interesting cloud footage, long (10 minute) takes to be made into time-lapses showing the transition of time since the Great Disaster.
-Character watching the sun-set, preferably with a storm looming over head.
-Character Loading Rifle (CLOSE UP)
-Shot of light beam from Heavy Duty Torch lighting up a stream through dense smoke, with character approaching through this smoke towards the camera.
-Other Stock Footage of Close up's; Hands, Walking through puddles, grasping a dagger.

NEXT I WILL STORY BOARD THE TEASER TRAILER - To use as a guideline when filming.