Short Horror Movie deconstruction

I have been looking at different short horror films similar to what I am aiming to do to get some more influences for my own work.
"FALLOUT" uses lots of typical conventions of a horror movie, at the start we see a masked man, preparing himself for something getting weapons ready. He looks rough and we dont see his face. The lighting is dark, and the music suggests something bad will happen as it is slow and eery, this makes the audience think that he is the antagonist as they are all features that are commonly are used to show the villan in all kinds of genres. In the following scene he walks around an empty, lifeless town looking at a childrens play park, aiming a gun at a rabbit, making the film seem as though it isn't horror at all and you don't know what is actually happen as everything seems so surreal. It subverts the genre by showing a location you would not associate with horror but something you might expect to have a happy, cheerful environment and brings it into a different light of horror, where everything is deserted and an evil looking man is there instead, where you might normally accosciate children playing. 
This shows me that you don't have to always follow the conventions you'd normally see in the genre and that subverting it could make it more scary due to the fact that it seems like something people would see in every day life.  

Whilst the character we are shown at the start is looking around, the feel changes using a point of view shot from behind some trees, adding a slight twist as it makes it seem like he is being watched by someone/ something which makes us think he may not be the antagonist but rather a protagonist that does not follow the conventions that you may expect of that role. This is also shown when the actor is narrating the scene and talks about survivors, making him sound as though he is trying to help people. 

The music used in the park is used to create suspense. It is very slow and eery,