Drone made from a recorded acoustic guitar. Two octaves lower. Approximately 90 bpm (or 120/180 bpm). . . Simple pattern but now its more dark and sinister. . .
A simple laser gunshot, based on below sound:https://freesound. Org/people/ianstargem/sounds/274775/. Would be very interested in knowing how you're using it :).
Brown noise heavily filtered and pitched down (not very much happening above 400 hz). Simple chorus/reverb added. Made using adobe audition (previously known as cool edit).