The Burrow Beast gun launches out a lure (which can be charged to go further) causing an underground worm creature to chase and devour the target(s) that are near the lure. The lure can also be moved with Psychokinesis or transmogrified (which yields huge amounts of ammo for other weapons in the game). It is not effective against buildings, bosses, vehicles, or anything other than humans. This is the "super weapon" that Shama Llama tells Crypto about and is the game's Hidden Weapon made available after finding 30 alien artifacts and completing all Arkvoodle Cult missions. Its only appearance is in Destroy All Humans! 2. The Burrow Beast has presumably been dormant since Arkvoodle's arrival to Earth, although it is unknown what happened to it after the events of Destroy All Humans! 2. It can be assumed, that it returned to Arkvoodle and went back to sleep.