I have separated the sound design for the film into three main groups – foley, effects and atmospheres.
Foley was recorded on one microphone AKG C414. Unfortunately I encountered a lot of the background noise but I have removed it by using the plugin iZotope RX 7 Spectral De-noise. Atmospheric drones are layered from recordings of various electromagnetic waves, for example from the interior of Overground train and random by SOMA Ether and run through the reverb with a long decay and horns are a preset of the virtual instrument called Analog from Ableton Live 11.
You can see the arrangement of all tracks in Ableton Live into three groups below:


Most of the scenes from the clip take place inside of the building, possibly former grocery store. To create the sense of large empty store I have applied reverb of small size and with very short decay on all the foley:

For one of the atmospheres which were mimicking the sound of refrigerator I used slightly larger reverb to create some distinction in the perception of the space:

I was originally experimenting with creating the effect of sensing the physical movement, especially in the scenes with very fast tip toe running, by using the phaser and phase shift but desired effect didn’t work. What appeared to be working to achieve the similar effect was simply automation of hard panning following the direction of the runner from left to right.
Mixing was done in the composition studio at London College of Communication.