Psychomachia - Nightvision is a DLC that introduces, as the name suggests, night vision.
Once you own the DLC, if you want to use night vision, instead of grabbing the flashlight, simply cut the power nearby.
The game becomes more challenging with night vision, so at your own risk if you start your first playthrough without the flashlight.
Warning: This game contains elements of absurd violence, sensitive content, partial nudity, fear, horror and gore. I advise players who have been affected by personal experiences such as abortions or situations involving newborns to consider this before purchasing or playing this game. Some scenes may not be suitable for all audiences and could be distressing for certain individuals.