In the year 3000, the Voyager picks up on alien life, the humans decide they're a threat to their supremacy in the Milky Way, so they send a fleet of rockets to destroy them. You saw this fleet on it's way to the town, and you would've warned them, but you knew they wouldn't believe you since you're the town crazy person. So you must destroy the fleet using not but your wits, your incredibly acrobatic legs, and your gun.
freesound.org/people/theplax/sounds/560579 - EXPLOSION SOUND EFFECT
incompetech.com - GUY WHO MADE MUSIC'S WEBSITE (the song is 8 Bit Dungeon by Kevin Macleod)