I really like the audio and visual design! The tense and unsettling atmosphere is very effective, especially paired with the sense of urgency brought on by the fun battery-managing gameplay.
Some feedback/suggestions: I think that the game could be slightly easier at the beginning, but also more difficult later on. An additional challenge I think would be interesting to add to this game would be having occasional "fake deliveries", which the player needs to use the computer appliance to determine whether to trust the delivery or not.
Overall I think your game executed the feeling of paranoia and the jam theme really well. Great work on the game!