Throughout the whole scene you will hear one consistent sound that is almost barely audible, the chirping of crickets. I thought this was to place more emphasis that is it night time for this scene as well as to place a calming atmosphere/effect. I know this sounds strange considering that the two men are discussing about the end of a contract killing where tensions should undoubtedly be high. Pure silence can definitely have an unnerving effect, perhaps the cricket sounds are used to build up shock value for when the man shoots the other man because the audio for the gunshot was very loud and had a reverb effect to it. Most sounds used are also made to sound diegetic (traffic noises, toilet flushing) to clearly establish the spatial setting.
As for video, there were a lot of close ups of objects, and the actor’s faces. They were edited in a fashion that emphasized what the actor was looking at as well to bring attention to said object. This was especially so when the man slowly pulls out the photo of the dead, we can see his unsettled expressions as he looks at them and the video cuts to a part of the picture where it showed the dead man’s arm.